PracticeTestVault review illustration for critical reasoning on GMAT

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GMAT Review: Critical Reasoning

Review critical reasoning for this GMAT question with the key prompt clue, correct-answer reasoning, distractor checks, and sources to verify next.

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This question-specific review guide is tied to the answer reasoning for a PracticeTestVault item. Use it after you answer the question so the review stays focused on what the prompt actually tested.

What this question is testing

Objective: Critical Reasoning

Prompt focus: Read the following argument, then answer the question. A publisher noticed that books with blue covers sold more copies last year than books with covers of other colors. The publisher concluded that printing future books with blue covers would increase their sales….

Why the correct answer works

Most of the blue-covered books last year were written by already famous, best-selling authors.

Famous authors being behind the blue-covered books gives an alternative cause for the higher sales.

Why the tempting wrong answer fails

The tempting wrong answer usually loses because it skips the key condition, priority, or evidence in the prompt.

Plain-language takeaway

The publisher assumes the blue covers caused higher sales. If the blue-covered books were mostly written by famous best-selling authors, the authors' popularity, not the cover color, likely explains the higher sales.

Simple analogy

Think of critical reasoning like following a short checklist: identify the clue, confirm the rule, and then make the move that fits this exact scenario.

How to review it before a retake

  • Underline the command word and name what the question is asking before rereading the choices.
  • Compare the correct answer against the closest distractor and write the exact detail that separates them.
  • Retest this objective with a fresh question without looking at the rationale first.

Sources to verify next