LSAT Explanation PT 32, S1, Q15: Seemingly inconsequential changes in sea temperature

LSAT Question Stem

Which one of the following most accurately describes the role played in the argument by the statement that zooplankton feed upon phytoplankton? 

Logical Reasoning Question Type

This is an Argument Part question. 

Correct Answer

The correct answer to this question is C. 

LSAT Question Complete Explanation

This LSAT problem presents an argument that discusses the impact of seemingly inconsequential changes in sea temperature due to global warming on fish and seabird populations. The question type is Argument Part (AP), which means we need to identify the role played by a specific statement within the argument. In this case, the statement is "zooplankton feed upon phytoplankton."

Let's analyze each answer choice in detail:

Answer choice (A): The statement about zooplankton feeding upon phytoplankton is not a hypothesis, but rather a fact that is used as a premise in the argument. Therefore, this answer choice is incorrect.

Answer choice (B): The statement is not an example of how the vertical mixing of seawater affects feeding habits. Instead, it is a premise that, when combined with the information about the vertical mixing of seawater, helps support the conclusion. Thus, this answer choice is not correct.

Answer choice (C): This is the correct answer choice. The phrase "it helps show" describes the role of a premise in the argument, and in this case, the premise about zooplankton feeding upon phytoplankton is used to support the conclusion that global temperature changes affect larger sea animals indirectly.

Answer choice (D): The argument does not take a position on whether global warming should be curtailed. It simply explains the consequences of small changes in sea temperature on fish and seabird populations. This answer choice is not correct.

Answer choice (E): This answer choice is an exaggeration. While the argument does discuss the negative effects of global warming on fish and seabird populations, it does not claim that global warming poses a threat to all organisms. Therefore, this answer choice is incorrect.

In summary, the correct answer choice is (C), as the statement about zooplankton feeding upon phytoplankton serves as a premise that helps show how global temperature changes affect larger sea animals indirectly.

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