Logical ReasoningDifficulty: Easy

PT157 S2 Q3 Explanation

Although there are immediate

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

TopicsMost Supported

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

Although there are immediate short-term gains in crop yield from a single application of certain hydrocarbon-based pesticides to fields on which they have not been previously used, studies have shown clearly that long-term use gradually depresses crop yield conclude that use of these pesticides _______.

What this question is testing

Most Supported

Given

These pesticides are the ultimate short-term relationship: great first impression, diminishing returns over time. The first application gives a nice yield boost. Then, with continued use, yields start sliding back down from that high point.

Evaluate

The "although" at the beginning is LSAT code for "yes, but actually..." The short-term gain is the concession; the long-term decline is the real story. And notice what the evidence does not say — it does not say yields drop below where they started. They drop from the "initially elevated level." So the pesticides might still be helping, just less and less.

Goal

Find the answer that captures "diminishing returns" without overcommitting to "total waste of money" or "environmental catastrophe."

Reading along? Open the full official question in LawHub — we show a fragment here and keep the reasoning in our own words.

The question
3.

Which one of the following would most logically complete the

Answer choices

  1. Too Speculative6% picked this

    is

    Calling pesticide use "uneconomic" goes beyond what the evidence supports. The evidence states that long-term use depresses crop yield from the initially elevated level, but we do not know by how much. The yield could still remain higher than it would be without pesticides, in which case the pesticides would still provide an economic benefit — just a decreasing one. "Uneconomic" means the costs outweigh the benefits entirely, and the evidence does not establish that threshold. Additionally, economic analysis would require information about the cost of the pesticides relative to the value of increased yield, which the stimulus does not provide.

  2. Out of Scope8% picked this

    damages the

    The argument discusses crop yield, not environmental damage. Nothing in the stimulus addresses the environmental impact of hydrocarbon-based pesticides. While pesticides might damage the environment, this is an entirely separate topic from the agricultural economics discussed in the stimulus. The conclusion must follow from the given evidence about yield patterns, not from unstated concerns about ecology.

  3. Too Speculative4% picked this

    will eventually make pest problems

    This answer makes two unsupported leaps. First, the stimulus never discusses pest problems at all — it discusses crop yields. While pests and crop yields are related, the evidence does not address pest populations, resistance, or management. Second, "unmanageable" is an extreme descriptor that the evidence cannot support. Even if we could infer something about pest problems from crop yield data, the evidence only describes gradually declining yields, not catastrophic pest-management failure. This answer introduces both a new topic and an extreme conclusion.

  4. Out of Scope1% picked this

    is probably not occurring in accordance with

    The argument provides no information whatsoever about manufacturers' instructions. We do not know what those instructions recommend regarding application frequency, dosage, or duration. The evidence describes what happens when the pesticides are used long-term, but it does not compare actual usage patterns to recommended ones. Without any reference point for what manufacturers advise, we cannot conclude that usage is or is not occurring in accordance with their instructions.

  5. Correct81% picked this

    gives financial returns that diminish over

    Why this is right

    This answer correctly captures the diminishing-returns pattern described in the evidence without overstating it. The evidence establishes that initial pesticide application produces gains in crop yield, and long-term use gradually depresses yields from that elevated level. "Financial returns that diminish over time" accurately describes this trajectory — there are returns (unlike answer A, which claims the whole enterprise is uneconomic), but they decrease over time. The answer avoids claims about environmental damage, pest management failure, or manufacturers' instructions, staying within the bounds of what the evidence supports. It correctly treats the initial yield gain as a financial return and the gradual decline as diminishing returns.

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

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