Logical ReasoningDifficulty: Medium

PT127 S3 Q23 Explanation

A summer day is

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

TopicsPrinciple-Conform

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Stimulus

A summer day is "pleasant" if there are intermittent periods of wind and the temperature stays below 84°F (29°C) all afternoon. A summer day with high humidity levels is "oppressive" either if the temperature or if there is no wind.

What this question is testing

Principle-Conform

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 summer weather reports most closely conforms to the

Answer choices

  1. Wrong Evidence2% picked this

    The temperature on Friday stayed below 82°F (28°C) all day, and there was no wind at all. It was a day of low humidity,

    This example relates to the ~W first principle, but fails to satisfy the sufficient condition since there was no intermittent wind.

  2. Wrong Evidence9% picked this

    On Monday, the temperature ranged from 85°F to 90°F (30°C to 32°C) from early morning until night. It was an oppressive day even

    This example relates to the ~HH second principle, but fail to satisfy he sufficient condition since the humidity levels were low.

  3. Wrong Evidence13% picked this

    On Tuesday, the temperature neither rose above nor fell below 84°F (29°C) throughout late morning and all afternoon. It was a pleasant day because

    This example relates to the first T< 84° F principle, but fails to satisfy the sufficient condition since the temperature did not stay below 84°F

  4. Wrong Evidence3% picked this

    On Wednesday, a refreshing breeze in the early morning became intermittent by late morning, and the day's humidity levels were constantly high. It was

    This example relates to the T > 84°F second principle, but fails to satisfy the sufficient condition since the temperature did not rise above 84°F

  5. Correct73% picked this

    On Thursday morning, the air was very still, and it remained windless for the whole day. Humidity levels for the day were high, and

    Why this is right

    This confirms to the second HH + ~W → O principle. Since the humidity levels were high and there was no wind, the day was "oppressive"

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

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