Critical Reasoning is a core component of the GMAT Verbal Reasoning section, evaluating a candidate’s ability to draw logical conclusions, construct arguments, and evaluate the soundness of given claims. Comprising short argumentative passages followed by targeted questions such as finding unstated assumptions, strengthening or weakening arguments, identifying logical flaws, and evaluating lines of reasoning the section tests advanced business logic rather than formal logic jargon. Regular practice with targeted multiple-choice questions helps candidates sharpen their deductive reasoning, spot subtle logical pitfalls, and improve scoring precision under timed adaptive conditions.
GMAT Critical Reasoning MCQs
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Correct Answer: c) A stated fact or piece of evidence used to support a conclusion.
Explanation:
A premise is explicitly stated in the text and provides the factual basis or evidence that the author uses to build their argument.
Correct Answer: b) The main point, claim, or prediction the author is trying to prove.
Explanation:
The conclusion is the author's primary claim or judgment, which is logically derived from the premises provided.
Correct Answer: a) An unstated premise that must be true for the argument's conclusion to logically follow.
Explanation:
Assumptions are never explicitly stated in the text. They are the hidden logical links required to make the argument valid.
Correct Answer: c) Because
Explanation:
Words like 'because', 'since', 'for', and 'given that' indicate that the author is providing evidence or a premise.
Correct Answer: b) Hence
Explanation:
Words like 'hence', 'therefore', 'thus', and 'consequently' typically introduce the author's conclusion.
Correct Answer: c) It acts as a conclusion for one piece of evidence, but serves as a premise for the main conclusion.
Explanation:
An intermediate conclusion is a stepping stone. It is supported by some premises and, in turn, supports the final main conclusion.
Correct Answer: b) The specific subject matter and boundaries within which the author's argument operates.
Explanation:
Scope defines the limits of the argument. Answer choices that fall 'out of scope' deal with topics or degrees not covered by the author's logic.
Correct Answer: b) The premise(s) and the conclusion.
Explanation:
The core of the argument is its logical skeleton: the specific evidence (premises) leading directly to the primary claim (conclusion).
Correct Answer: b) To establish the context of the situation without actively supporting the conclusion.
Explanation:
Background information sets the scene (e.g., 'In 1999, the city passed a law...') but does not serve as direct evidence for the author's specific conclusion.
Correct Answer: b) A fact that goes against the author's conclusion, often introduced to be dismissed.
Explanation:
Authors often use counter-premises (signaled by words like 'although' or 'despite') to acknowledge opposing facts before proving their own point.
Correct Answer: b) Weaken
Explanation:
Weaken questions ask you to identify a fact that, if true, casts the most doubt on the logical validity of the argument.
Correct Answer: c) Strengthen
Explanation:
Strengthen questions require you to find an answer choice that bolsters the argument, often by confirming an assumption or ruling out an alternative cause.
Correct Answer: a) A Necessary Assumption
Explanation:
Phrases like 'depends on', 'relies on', or 'assumes' indicate an Assumption question, requiring a statement essential to the argument's survival.
Correct Answer: c) Inference / Draw a Conclusion
Explanation:
Inference questions act like a math problem; the correct answer must be 100% undeniably true based solely on the facts in the passage.
Correct Answer: b) Resolve the Paradox
Explanation:
Paradox questions present two seemingly contradictory facts and ask you to find a new piece of information that allows both facts to comfortably coexist.
Correct Answer: b) To identify a question or piece of information whose answer would determine the logical validity of the argument.
Explanation:
Evaluate questions ask you to find the missing variable. Depending on how that variable turns out (yes or no), the argument will either be strengthened or weakened.
Correct Answer: a) Method of Reasoning / Flaw
Explanation:
Flaw questions require you to identify the structural reasoning error in the argument, such as confusing correlation with causation.
Correct Answer: b) To determine the structural role that the bolded statements play in the overall argument.
Explanation:
Boldface (Method of Reasoning) questions test your ability to classify parts of an argument (e.g., identifying a premise, a counter-premise, or a conclusion).
Correct Answer: b) Eliminate the four choices that perform the action (e.g., weaken), and select the one that does not.
Explanation:
In an EXCEPT question, four answers will do what the question states. The correct answer is the odd one out—it either has no effect or does the opposite.
Correct Answer: b) Anticipating the gap, assumption, or potential answer before reading the answer choices.
Explanation:
Pre-thinking involves actively identifying the logical gap between the premise and conclusion before looking at the options, which helps avoid trap answers.
Correct Answer: b) Attack the author's central assumption.
Explanation:
You cannot argue with the stated facts (premises) on the GMAT. To weaken an argument, you must show that the unstated assumption linking the premise to the conclusion is flawed.
Correct Answer: b) Provide an alternative cause (C) that actually caused B.
Explanation:
Providing a viable alternative explanation (an alternate cause) breaks the author's assumption that A was the sole cause of B.
Correct Answer: b) Showing that instead of A causing B, the reality is that B caused A.
Explanation:
If an author sees a correlation and assumes A causes B, pointing out that B actually causes A is a powerful way to weaken the argument.
Correct Answer: a) Show that the sample used in the survey was unrepresentative of the general population.
Explanation:
If a conclusion about a whole population is drawn from a biased or unrepresentative sample, the argument is logically flawed.
Correct Answer: b) Highlight a relevant, fundamental difference between X and Y that destroys the comparison.
Explanation:
Arguments by analogy assume the two things being compared are similar in the relevant aspects. Pointing out a crucial difference breaks the logic.
Correct Answer: b) A statement showing that doing Y will trigger an unforeseen negative consequence that prevents X.
Explanation:
If a plan introduces a side effect that actively thwarts the stated goal, the plan is logically unsound.
Correct Answer: b) Showing that conditions have significantly changed between the past evidence and the future prediction.
Explanation:
Arguments that assume 'what happened in 1990 will happen in 2030' can be weakened by showing that the relevant circumstances have changed drastically.
Correct Answer: b) Yes, if the extreme statement introduces a fact that successfully destroys the argument's assumption.
Explanation:
Unlike Inference questions, Weaken (and Strengthen) questions introduce *new* information. An extreme new fact can be a perfectly valid way to destroy an argument.
Correct Answer: b) An answer that states a real-world fact that has absolutely no bearing on the logical gap between the premise and conclusion.
Explanation:
Trap answers often state plausible, true-sounding facts that simply fall 'out of scope' and do not affect the specific conclusion being drawn.
Correct Answer: b) Company X's total revenue and assets increased by 500% in the same period.
Explanation:
Looking at an absolute increase in debt is meaningless without looking at the whole financial picture (assets/revenue). This choice shows the debt increase is manageable.
Correct Answer: b) Explicitly state and confirm the author's unstated assumption.
Explanation:
Strengthening an argument involves finding a new piece of evidence that bridges the gap between the premise and the conclusion, validating the assumption.
Correct Answer: a) Rule out a plausible alternative cause (C) for B.
Explanation:
By eliminating other potential explanations, you make it much more likely that the author's proposed cause (A) is the actual cause.
Correct Answer: a) Showing that when A is present, B is also present.
Explanation:
Providing an additional data point where the cause and effect occur together (or where the absence of the cause leads to the absence of the effect) strengthens the causal link.
Correct Answer: b) Show that the two things being compared share another critical, relevant similarity.
Explanation:
Confirming that the two subjects of the analogy are fundamentally similar in ways relevant to the conclusion strengthens the argument.
Correct Answer: b) Show that the survey sample accurately reflects the demographics of the broader population.
Explanation:
Validating the representativeness of a data sample removes the assumption that the sample might be flawed, thus strengthening the conclusion.
Correct Answer: b) Customer demand for the product is highly inelastic (they will buy it regardless of price).
Explanation:
If customers will continue to buy the product despite the price hike, the plan to increase profits by raising prices is much more likely to succeed.
Correct Answer: b) Selecting an answer that actually weakens the argument.
Explanation:
Test-makers frequently include 'opposite' trap answers. If you lose track of your task, you might accidentally pick a choice that weakens the argument.
Correct Answer: b) Because the prompt asks for 'which of the following, if true', requiring a NEW piece of supporting evidence.
Explanation:
Repeating a premise does not add any new logical support; we already accept the premises as true. A strengthener must provide new information that bridges a gap.
Correct Answer: b) In a neighboring farm with identical soil, the fertilizer increased yields by 20%.
Explanation:
This provides a highly relevant comparative data point (similar soil) showing the cause (fertilizer) resulting in the desired effect (increased yields).
Correct Answer: c) Attacking the personal character of those who disagree with the conclusion.
Explanation:
Ad hominem attacks (attacking the person rather than the logic) are logical fallacies and never validly strengthen an argument on the GMAT.
Correct Answer: b) A statement that MUST be true in order for the argument to not fall apart.
Explanation:
Most GMAT assumption questions ask for necessary assumptions. If a necessary assumption is false, the argument collapses.
Correct Answer: b) To determine if an answer choice is a Necessary Assumption.
Explanation:
If you negate an answer choice and the negation completely destroys the author's argument, then that answer choice was a necessary assumption.
Correct Answer: b) Some cats are not mammals.
Explanation:
The logical opposite of 'All' (100%) is 'Not all' (0% to 99%), which is best expressed as 'At least one is not' or 'Some are not'.
Correct Answer: c) No one likes pizza.
Explanation:
The logical opposite of 'Some' (1 to 100) is 'None' (0). Therefore, the negation is 'No one likes pizza'.
Correct Answer: b) An assumption that protects the argument by ruling out a potential weakness or alternate cause.
Explanation:
Defender assumptions act like a shield, explicitly stating that a potential problem or alternate explanation does not exist (e.g., 'The equipment did not malfunction').
Correct Answer: a) An assumption that links new or rogue elements in the premise to elements in the conclusion.
Explanation:
If a conclusion introduces a new concept not mentioned in the premises, a supporter assumption is needed to connect the premise concepts to the new conclusion concept.
Correct Answer: c) The argument will completely fall apart / be logically destroyed.
Explanation:
Because a necessary assumption is essential to the argument, asserting that it is false (negating it) must shatter the logical integrity of the conclusion.
Correct Answer: a) Because arguments rarely depend on extreme, absolute conditions to simply be valid.
Explanation:
An argument might assume that 'some' people will buy a product, but rarely needs to assume that 'all' or 'only' those people will buy it to be logically sound.
Correct Answer: b) The increase in the number of tickets sold will more than offset the loss in revenue per ticket.
Explanation:
For revenue (Price x Volume) to increase when Price decreases, Volume must increase sufficiently to compensate. If you negate this, the argument fails.
Correct Answer: b) Reversal / Opposite Trap
Explanation:
Test makers often include answers that state the exact opposite of the necessary assumption. Rushed test-takers see the right keywords and pick it without checking the logical direction.
Correct Answer: b) To solve Evaluate the Argument questions by supplying opposite extreme answers (e.g., Yes/No) to the choices.
Explanation:
By asking the question posed in the answer choice and answering it with extremes (e.g., 0% vs 100%), you can see if the variance affects the conclusion. If one extreme strengthens and the other weakens, it's the right answer.
Correct Answer: b) It introduces a variable or question that needs to be answered to judge the argument.
Explanation:
Evaluate answer choices often start with 'Whether' (e.g., 'Whether the new policy will cost more than it saves'). The answer to this 'whether' dictates the argument's strength.
Correct Answer: b) No, a correct evaluate answer must strengthen the argument on one side of the variance and weaken it on the other.
Explanation:
An evaluate question seeks the pivot point of the argument. If the answer doesn't change the outcome regardless of whether it is true or false, it is irrelevant.
Correct Answer: b) To find an answer choice that allows both seemingly contradictory facts to be true simultaneously.
Explanation:
Paradox questions require you to accept both facts as true and find the missing piece of context that makes them logically compatible.
Correct Answer: a) An answer that explains only one side of the paradox while ignoring or worsening the other.
Explanation:
A correct answer must act as a bridge between BOTH facts. Explaining why Fact A happened doesn't help if it deepens the mystery of why Fact B also happened.
Correct Answer: b) No, you must accept all stated premises as factual and true.
Explanation:
In CR, premises are sacred. An answer choice that says 'Actually, the first fact is wrong' is always incorrect. You must reconcile the facts, not deny them.
Correct Answer: c) However, yet, surprisingly, despite
Explanation:
These contrast words highlight the exact point of discrepancy or conflict that you will be asked to resolve.
Correct Answer: b) The cost to manufacture and market each item increased by 40%.
Explanation:
Profit = Revenue - Costs. If volume (sales) went up but profit went down, an increase in costs perfectly reconciles the two facts.
Correct Answer: b) Because stating that 'A is faster than B' doesn't explain why A's speed actually dropped this year.
Explanation:
Trap answers often compare the subject to a competitor or a different era in a way that doesn't address the specific internal discrepancy described in the prompt.
Correct Answer: a) An answer that makes the mystery even more confusing by providing a fact that pushes the two sides further apart.
Explanation:
If sales are down despite a massive ad campaign, an answer saying 'The ad campaign was rated the best in history' deepens the paradox rather than resolving it.
Correct Answer: a) Assuming that because two events happen together, one must have caused the other.
Explanation:
Just because X and Y occur simultaneously (correlation) does not logically prove that X causes Y. Y could cause X, or Z could cause both.
Correct Answer: a) Assuming that because Event B happened after Event A, Event A caused Event B.
Explanation:
Chronological sequence does not equal causation. The rooster crowing before the sunrise does not mean the rooster causes the sun to rise.
Correct Answer: b) The conclusion simply restates the premise in different words, providing no actual new evidence.
Explanation:
Also known as begging the question. Example: 'This law is just because it is a fair law.' It assumes the truth of what it is trying to prove.
Correct Answer: b) Attacking the character, motive, or background of the person making the argument rather than the logic of the argument itself.
Explanation:
Dismissing a health policy simply because the politician who proposed it is arrogant is an ad hominem fallacy. The character of the arguer does not invalidate the math/logic of the policy.
Correct Answer: b) Using the same word in two different senses or meanings within the same argument.
Explanation:
For example, using the word 'light' to mean 'not heavy' in the premise, but concluding something about 'light' meaning 'bright colors'.
Correct Answer: a) Assuming that because every part of a system has a certain characteristic, the whole system will inherently have that same characteristic.
Explanation:
Just because every player on a basketball team is an 'all-star' (part) doesn't mean they will play well together as a cohesive 'team' (whole).
Correct Answer: a) Assuming that what is true of a whole group is necessarily true of every individual member of that group.
Explanation:
If a corporation is highly profitable (whole), it is a flaw to assume that every single department within the corporation is profitable (part).
Correct Answer: b) Unfairly presenting only two options or extremes as the only possible choices, ignoring other viable alternatives.
Explanation:
An argument stating 'We must either raise taxes by 50% or the city will go bankrupt' ignores the possibilities of cutting spending or raising taxes by a smaller amount.
Correct Answer: a) Evaluating a situation by looking only at the subjects that 'survived' a process, while ignoring those that failed and were eliminated.
Explanation:
Concluding that 19th-century architecture was stronger because all surviving 19th-century buildings are strong ignores the thousands of weak buildings that already collapsed.
Correct Answer: b) An increase in a percentage does not guarantee an increase in an absolute number if the baseline totals (the pie) are different sizes.
Explanation:
A 10% share of a $1 million market ($100k) is smaller than a 5% share of a $10 million market ($500k). Arguments confusing the two are deeply flawed.
Correct Answer: b) When a survey relies on individuals choosing to participate, which often only attracts those with strong or extreme opinions.
Explanation:
A voluntary internet poll about a controversial topic will mostly attract people with strong feelings, making it unrepresentative of the general, apathetic population.
Correct Answer: a) Arguing that because a belief is popular or held by many people, it must be true or correct.
Explanation:
Truth is not determined by a majority vote. Millions of people once believed the Earth was flat, but that popularity did not make it factually true.
Correct Answer: b) Misrepresenting or exaggerating an opponent's argument to make it easier to attack and defeat.
Explanation:
If Person A says 'We should increase school funding', and Person B replies 'Person A wants to throw all our money away and bankrupt the town', Person B is attacking a straw man.
Correct Answer: b) Relying on the endorsement of an expert in an unrelated field as definitive evidence for a conclusion.
Explanation:
Using a Nobel Prize-winning physicist's opinion to prove a point about macroeconomics is flawed because their expertise does not transfer to the unrelated topic.
Correct Answer: b) Comparing two situations or entities that have fundamental, relevant differences that invalidate the comparison.
Explanation:
Arguing that 'Policy X worked in a small rural town, so it will work in a massive urban metropolis' ignores critical demographic and structural differences.
Correct Answer: b) Assuming that conditions in the past will remain exactly the same in the present or future.
Explanation:
Just because a marketing strategy worked flawlessly in 2005 does not guarantee it will work today; the argument assumes the market hasn't changed.
Correct Answer: a) Thinking a requirement guarantees a result, or thinking a guarantee is the only way to get a result.
Explanation:
Breathing is necessary to live, but it is not sufficient (you also need food). A flaw occurs if an argument assumes doing a necessary step guarantees success.
Correct Answer: b) It leaps to one specific conclusion without considering that other factors could equally explain the evidence.
Explanation:
If a student's grade improves and the author concludes it was due to a new textbook, they are ignoring alternatives like a new tutor, more study time, or an easier test.
Correct Answer: b) Focusing on specific, dramatic probability statistics while ignoring the underlying overall frequency (base rate) of the event.
Explanation:
If a disease affects 1 in a million people, a test that is 99% accurate will still yield vastly more false positives than true positives because the base rate is so low.
Correct Answer: a) Arguing that a project should continue solely because a lot of money/time has already been invested, despite evidence it will fail.
Explanation:
Logically, future decisions should be based on future expected value, not on unrecoverable past expenses (sunk costs).
Correct Answer: b) The answer must be a logical certainty derived entirely and exclusively from the provided premises.
Explanation:
Inference answers leave no room for doubt. If the premises are true, the correct answer is mathematically/logically impossible to be false.
Correct Answer: b) Because Inference questions test reading comprehension and logic based strictly on the given text, not your domain knowledge.
Explanation:
Even if an answer choice states a well-known scientific fact, it is incorrect if it cannot be proven using ONLY the sentences in the prompt.
Correct Answer: b) Yes, a correct inference can sometimes just restate a provided fact using different vocabulary.
Explanation:
Since a paraphrase of a premise must be true if the premise is true, it perfectly satisfies the 'must be true' criteria of an Inference question.
Correct Answer: c) If both companies have the same number of employees, Company A's total payroll is larger.
Explanation:
Average = Total / Number. If the Average is higher, and the Number is equal, the Total must mathematically be higher.
Correct Answer: a) Because passages rarely provide the absolute proof necessary to support such sweeping 100% claims.
Explanation:
If a passage says 'Most dogs bark', you cannot infer that 'ALL dogs bark'. Extreme language requires extreme proof in the premises.
Correct Answer: b) An answer that is possible or highly likely based on the text, but not 100% definitively proven by it.
Explanation:
Inference requires certainty. A statement that has a 95% chance of being true is still a trap because it does not meet the 'must be true' standard.
Correct Answer: b) An answer choice that is undeniably true in real life, but not supported by the specific text in the passage.
Explanation:
For example, answering 'Water freezes at 0 degrees Celsius' might be factually true in reality, but if the passage only discusses boiling points, it's an invalid inference.
Correct Answer: a) Two independent premises provided in the text to deduce a third unstated fact.
Explanation:
If Premise 1 is 'A > B' and Premise 2 is 'B > C', combining them yields the valid inference 'A > C'.
Correct Answer: b) An Assumption is an unstated premise needed to reach the conclusion; an Inference is an unstated conclusion derived strictly from the premises.
Explanation:
An assumption comes *before* the conclusion to support it. An inference comes *after* the premises as a guaranteed result.
Correct Answer: b) Equal to or narrower than the scope of the provided premises.
Explanation:
You cannot infer a broad rule ('All birds fly') from a narrow premise ('Eagles fly'). The scope of the answer must stay within the boundaries set by the text.
Correct Answer: b) To identify the structural and logical role the bolded portions play in the argument's architecture.
Explanation:
These questions ask you to describe how the argument is built—for example, recognizing that the first boldface is a counter-premise and the second is the main conclusion.
Correct Answer: b) Identifying the author's main conclusion.
Explanation:
You cannot determine the role of a bolded sentence until you know what the author is ultimately trying to prove (the main conclusion).
Correct Answer: b) A stated premise, fact, statistic, or finding.
Explanation:
Words like 'evidence', 'findings', 'data', and 'considerations' describe the premises that support a claim.
Correct Answer: b) A conclusion, judgment, or opinion held by the author or someone else.
Explanation:
'Position', 'claim', 'stance', and 'judgment' are words used to describe conclusions rather than hard factual evidence.
Correct Answer: b) Language indicating contrast (e.g., 'the first opposes the main conclusion; the second is that conclusion').
Explanation:
Identifying the relationship between the two boldfaces (agree vs. disagree) allows you to quickly eliminate answer choices that misrepresent their dynamic.
Correct Answer: b) Misidentifying an intermediate conclusion or an opponent's conclusion as the author's main conclusion.
Explanation:
Answer choices will try to trick you by saying 'the first is the main conclusion' when it is actually just an intermediate step or a critic's opinion.
Correct Answer: a) Because the answer choices are written in dense, abstract language that can confuse you if you don't already have a grasp of the structure.
Explanation:
The options in Boldface questions are notoriously verbose and convoluted. Mapping the structure in your head first protects you from getting lost in the jargon.
Correct Answer: b) 1.5 to 2 minutes
Explanation:
To maintain proper pacing on the Verbal section, you should aim to solve most CR questions within approximately 1 minute and 45 seconds to 2 minutes.
Correct Answer: b) Actively identifying and crossing out objectively wrong answers (e.g., out of scope, extreme language) to find the correct answer by default.
Explanation:
Often, the correct answer is written in a confusing way, making it easier to find by eliminating the four definitively flawed trap answers.
Correct Answer: b) To know exactly what perspective (e.g., looking for a flaw vs. looking for an inference) to use while reading the text actively.
Explanation:
Knowing your task (Weaken, Assume, Infer, etc.) beforehand allows you to read actively, hunting for gaps or mapping logic right from the first read.
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