Logical ReasoningDifficulty: Medium

PT105 S4 Q8 Explanation

Linguist: Only if a sentence

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

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Stimulus

Linguist: Only if a sentence can be diagrammed is it grammatical. Any grammatical sentence is recognized as grammatical by speakers of its language. Speaker X's sentence can be diagrammed. So, speaker grammatical by speakers of its language.

What this question is testing

Weaken

Your task

Find the choice that makes the argument's conclusion less likely to be true.

Common trap

Answers that look negative but attack a claim the argument never relied on.

Winning move

Find the assumption the argument depends on, then pick the choice that undermines it.

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

The question
8.

The linguist's reasoning is flawed because it fails to consider the

Answer choices

  1. Trap6% picked this

    most people are unable to diagram

  2. Correct80% picked this

    some ungrammatical sentences are

    Why this is right

    Answer B is correct.

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

  3. Trap7% picked this

    all sentences recognized as grammatical can

  4. Trap5% picked this

    all grammatical sentences can be

  5. Trap3% picked this

    some ungrammatical sentences are recognized as

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