Logical ReasoningDifficulty: Medium

PT5 S1 Q20 Explanation

Experienced gardeners advise against

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

TopicsParallel

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Stimulus

Experienced gardeners advise against planting snap peas after late April because peas do not develop properly in warm weather. This year, however, the weather was unusually cool into late June, and therefore the fact that these snap peas were in crop failure despite the experts’ warnings.

What this question is testing

Parallel

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
20.

The pattern of reasoning displayed above is most closely paralleled in which one

Answer choices

  1. Bad Match11% picked this

    According to many gardening authorities, tomatoes should not be planted near dill because doing so is likely to affect their taste adversely; however, since

    This conclusion isn't a prediction with a medium-strong degree; it's a strong judgment about what is and isn't reasonable. The prediction in this argument with a medium-strong degree (likely) is the opposing evidence cited by the expert.

  2. Correct79% picked this

    Since African violets do not thrive in direct sunlight, it is said that in this region these plants should be placed in windows facing

    Why this is right

    This argument proceds in a slightly different order but is logically a great match. We open with a principle cited as opposing evidence (African violets don't do well in sunlight), from which an opinion is derived (it is said that in this region these plants should be planted in northfacing rather than southfacing windows). The premise says that the principle doesn't apply in this particular circumstance (these southfacing windows are well shaded), so we conclude a medium-strong prediction that we don't need to follow that advice (African violets placed in these windows are likely to grow satisfactorily).

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

  3. Bad Evidence Match5% picked this

    Where flowers are to be planted under shade trees, gardening experts often advise using impatiens since impatiens does well in conditions of shade; however,

    Answer C is framed as "Experts say you should X because Y" wheras in our original argument, the advice is " Experts say you should NOT X because Y." The evidence goes on to neutralize Y in a particular case and conclude that we don't need to follow advice X. In answer C, raising the non-conforming case of the shade beneath maple trees doesn't neutralize the original recommendation to avoid something. That makes this tempting answer ultimately a bad match for the evidence.

  4. Bad Conclusion Match3% picked this

    Most seeds tend to germinate at much higher rates when planted in warm soil than when planted in cold soil; spinach seeds, however, are

    In D, the expert advice is the conclusion. In our original argument, it's the opposing conclusion. The evidence also has non-matching degree words: most, tend, and we don't support the conclusion by neutralizing the opposing evidence.

  5. Bad Conclusion Match2% picked this

    House plants generally grow best in pots slightly larger than their existing root systems, so the usual advice is to repot when roots first

    In E, the conclusion recommends against following the expert advice in the case of one type of plant. The original argument made a prediction, not a recommendation, and it had the medium strong degree of "unlikely" which E's conclusion does not.

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