Logical ReasoningDifficulty: Medium

PT132 S2 Q7 Explanation

When the famous art

A free, expert breakdown of this official LSAT Logical Reasoning question.

TopicsParallel Flaw

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Stimulus

When the famous art collector Vidmar died, a public auction of her collection, the largest privately owned, was held. "I can't possibly afford any of those works because hers is among the most single person," declared art lover MacNeil.

What this question is testing

Parallel Flaw

Your task

Break the argument into its conclusion and evidence, then do exactly what the question stem asks with that structure.

Common trap

Answers that sound relevant to the topic but don't connect to the argument's actual reasoning.

Winning move

Predict what a right answer must do, then test each choice against the conclusion-evidence gap.

Reading along? Open the full official question in LawHub — we show a fragment here and keep the reasoning in our own words.

The question
7.

The flawed pattern of reasoning in which one of the following is most closely parallel to that

Answer choices

  1. Part to Whole / Valid4% picked this

    Each word in the book is in French. So the whole book

    This goes from something true of the Part (each word in the book) to a conclusion about the Whole (the whole book). This is also a valid argument, since a book in which every word is in French is fairly described by saying "the whole book is in French".

  2. Valid5% picked this

    The city council voted unanimously to adopt the plan. So councilperson Martinez voted to

    This does make a Whole to Part move (premise about council, conclusion about councilperson). But it's a valid move, but the council voted unanimously, so therefore every member of the council did vote as the group voted.

  3. Correct76% picked this

    This paragraph is long. So the sentences that comprise it

    Why this is right

    This makes a flawed Whole to Part move. The whole paragraph is long. So each sentence that is a part of it is long? That doesn't have to be true. I could make a very long paragraph with very short sentences.

    Skill tested: Parallel Flaw · how this choice captures the argument's function is the move to repeat next time.

  4. Part to Whole10% picked this

    The members of the company are old. So the company itself

    This is flawed, but it goes from Part (the members) to Whole (the company itself). We're trying to copy an argument that goes from Whole to Part.

  5. Part to Whole6% picked this

    The atoms comprising this molecule are elements. So the molecule itself

    This is flawed, but it goes from Part (the atoms comprising the molecule) to Whole (the molecule itself). We're trying to copy an argument that goes from Whole to Part.

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