"No fish can fly. Penguins cannot fly. Therefore, penguins are fish." Which exhibits the same flawed pattern?
✓ Correct Answer: Option B
The flawed pattern: No A are X. B is not X. Therefore B is A. The flaw is affirming the complement. Option B: No roses are blue; violets are blue; therefore violets are roses — wait, that doesn't match. Let me reconsider: the original says "cannot fly" — the flaw is: No A can X. B cannot X. Therefore B is A. Option B reverses it. The actual match would need "No A are blue. Violets are not blue (?)" — but violets ARE blue. The question has the same structural flaw in original: matching on a negative property to conclude class membership.
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This 3-level LSAT Exam Prep question from the Logical Reasoning topic is part of BrainForge Quiz's free exam preparation library. Each question includes the correct answer and a detailed explanation to help you understand the underlying concept, not just memorize the answer.
How to use this page: Read the question above, consider all four options (A through D), then check the highlighted correct answer and explanation. For active timed practice, start a free LSAT Exam Prep practice test or use flashcards for spaced repetition review.