Logical ReasoningDifficulty: Hard

PT126 S1 Q25 Explanation

Some twentieth-century art

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

TopicsMust be True

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Stimulus

Some twentieth-century art is great art. All great art involves original ideas, and any art that is be great art.

What this question is testing

Must be True

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
25.

Each of the following statements follows logically from the set of statements

Answer choices

  1. Must Be True10% picked this

    Some influential art involves original

    This can be inferred from the GA → OI second and third statements. GA → I ∴ I ↢some↣ OI

  2. Must Be True5% picked this

    Some twentieth-century art involves original

    This can be inferred from the 20th ↢some↣ GA first and second statements. GA → OI ∴ 20th ↢some↣ OI

  3. Correct65% picked this

    Only art that involves original ideas

    Why this is right

    We can't derive any connection between original ideas and influential. It's very possible that some influential art doesn't involve original ideas. That doesn't go against anything in the stimulus. There could be art that is influential, but not great, and so it might not have any original ideas (like Taylor Swift's music, just kidding Swifties don't murder me).

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

  4. Must Be True13% picked this

    Only art that is influential and involves original ideas is

    This can be inferred from the GA → OI second and third statements. GA → I GA → I + OI

  5. Must Be True7% picked this

    Some twentieth-century art is influential and involves

    This can be inferred from 20th ↢some↣ GA all three statements. GA → OI GA → I ∴ 20th ↢some↣ I + OI

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