Logical ReasoningDifficulty: Hard

PT129 S3 Q23 Explanation

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

TopicsMost Supported

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Stimulus

In modern "brushless" car washes, cloth strips called mitters have replaced brushes. Mitters are easier on most cars' finishes than brushes are. This is especially important with the new clear-coat finishes found on easily scratched than older finishes are.

What this question is testing

Most Supported

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
23.

Which one of the following is most strongly supported by the statements above, if those

Answer choices

  1. Unsupported Comparison14% picked this

    When car washes all used brushes rather than mitters, there were more cars on the road with scratched

    When car washes all used brushes rather than mitters, the cars generally had more durable finishes than the new clear-coat finishes found on cars today. While brushes are more likely to scratch a car’s finish, having a more durable finish makes it less likely the car’s finish will be scratched.

  2. Unsupported Relationship5% picked this

    Modern "brushless" car washes were introduced as a direct response to the use of clear-coat

    The statements do not indicate why “brushless” car washes were introduced.

  3. Correct65% picked this

    Modern "brushless" car washes usually do not produce visible scratches on cars

    Why this is right

    Since mitters are easier on most cars’ finishes than brushes are and older finishes are less easily scratched than newer finishes, the statements support the point that “brushless” car washes (i.e., the new ones with mitters) usually do not produce visible scratches on cars with older finishes.

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

  4. Out of Scope2% picked this

    Brushes are more effective than mitters and are preferred for cleaning cars

    The effectiveness of brushes and mitters are not discussed in the statements.

  5. Too Strong14% picked this

    More cars in use today have clear-coat finishes rather than

    The second statement says that many cars today have a clear-coat finish, but to say that more cars have clear-coat finishes goes too far.

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