Logical ReasoningDifficulty: Medium

PT115 S2 Q19 Explanation

Jeff: Proposed regulations concerning the

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

TopicsPrinciple-Strengthen

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Stimulus

Jeff: Proposed regulations concerning the use of animals in scientific experimentation would prohibit experimentation on those species that humans empathize with: dogs and horses, for example. But extensive neurological research on mammals shows that they are all capable of feeling pain, just as be extended to all experimentation on all mammals.

Miranda: Yet the issue of pain is not the crux of the matter. Experimentation on any nonhuman animal undermines respect for life itself because only humans are capable of consenting to an experiment. Since any activity that undermines respect for life diminishes the new regulations should ban all such experimentation.

What this question is testing

Principle-Strengthen

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
19.

Which one of the following is a principle that, if established, would best support

Answer choices

  1. Bad Evidence Match1% picked this

    Regulations on the use of animals in scientific experimentation should be primarily concerned with respecting the feelings of the humans

    This answer helps us argue that regulations on animal experimentation should be worried about respecting the feelings of humans. This rule would help those mammals whom we empathize with and feel guilty experimenting on. But it wouldn't help the other mammals that Jeff wants to extend the prohibition to cover. We would want an answer saying that regulations on animal experimentation should be worried about respecting the capacity to feel pain of the research subjects.

  2. Bad Conclusion Match4% picked this

    Whatever means are used to determine whether dogs and horses feel pain should also be used to determine

    This is a rule that governs how one should determine whether an animal feels pain. We've already determined that all mammals are capable of feeling pain. We need a rule that governs whether or not experimentation on an animal should be allowed.

  3. Bad Conclusion Match7% picked this

    Only those experiments on animals that are known to cause those animals pain

    Since "only" always indicates a right side idea, this is saying if an experiment ? then it's known should be prohibited to cause pain By contraposing this, we could get a rule that says, "If it isn't known to cause pain, then it shouldn't be prohibited". A rule that allows us to conclude that experimentation shouldn't be prohibited is useless to us. Jeff is trying to conclude that experimentation should be prohibited.

  4. Bad Conclusion Match18% picked this

    Scientists who perform experiments on animals should empathize with any mammal as much as they empathize

    This is a rule that governs whether one should empathize with a given animal. We need a rule that governs whether or not experimentation should be allowed on a given mammal.

  5. Correct70% picked this

    Scientific experimentation should be prohibited on any creature that is capable

    Why this is right

    Since "any" always indicates a left side idea, this is saying a creature is capable ? experimentation of feeling pain should be prohibited That works great for Jeff's argument. He established that all mammals are capable of feeling pain, and so according to this rule we would get his conclusion that "experimentation should be prohibited on all mammals".

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

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