Logical ReasoningDifficulty: Easy

PT155 S2 Q8 Explanation

If a garden does not receive

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

TopicsFlaw

Keep going in LSAT Lab

  • Save & drill this skill build targeted practice sets from questions like this one

  • Video walkthroughs watch every question solved step by step

  • 81 official LSATs as questions, timed sections & full-length tests

Full official LSAT questions are available through LawHub. This page provides LSAT Lab's explanation, strategy, and review tools without republishing the full official question.

Stimulus

If a garden does not receive plenty of water and sunlight and is not planted in rich soil, then it will not be productive. Patricia has located her garden in an area that is ideal for receiving water and sunlight, and has made and compost. Hence, Patricia’s garden will be productive.

What this question is testing

Flaw

Your task

Describe the reasoning error the argument actually commits.

Common trap

Answers that name a real logical flaw the argument doesn't actually make.

Winning move

Articulate the gap in the reasoning yourself, then match it to the choice that describes that 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
8.

The reasoning in the argument is flawed in that

Answer choices

  1. Never a Flaw4% picked this

    fails to specify adequately the meaning in context of the

    There's never been a correct answer that demands a specific measurement or quantity or definition, or forces us to name specifically who our sources are. We know what "ideal" means = best possible.

  2. Wrong Flaw4% picked this

    infers a cause from a

    This refers to the famous Causal Flaw, but there's no correlation in the evidence. A correlation would sound like "gardens that don't get plenty of water and sunlight and aren't planted in rich soil are less likely than those who do to be productive".

  3. Never Correct / Wrong Flaw2% picked this

    confuses a cause with its

    This also refers to Causal Flaws, but this answer is never correct. We can suggest to an author that they have possibly become too convinced of one causal possibility, where others exist ("fails to consider that a given causal relationship may be occurring in reverse"), but we are never allowed to act like we know the "right" version of causality. Otherwise, we'd be duplicating the author's flaw.

  4. Correct90% picked this

    takes a set of necessary conditions

    Why this is right

    Any time we see the Necessary vs. Sufficient answer choice, we can just ask ourselves, "Was there conditional logic in the argument?" If so, there's a 90% or better chance that's the right answer. If not, there's a 0% chance it's the right answer. A productive garden requires plenty of water and sunlight and rich soil. Meanwhile, this author acts like since we know that Patricia has met those three requirements that her garden therefore will be productive. So the author is acting like those three requirements are sufficient to guarantee a productive garden.

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

  5. Wrong Flaw0% picked this

    relies on a sample that is unlikely to

    This refers to the famous Sampling flaw, in which we're nervous about an author relying on a sample because it's too small, unrepresentative, or self-selecting.

Continue the review in LSAT Lab

Save this question, watch the video walkthrough, and drill similar questions in your LSAT Lab account.

LSAT Lab

Turn this review into a targeted study plan.

Save this question, drill more like it, watch the video walkthrough, and track your progress in your LSAT Lab account.

Start practicing free