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The author neutrally presents contrasting perspectives and concludes they reflect a shift in cultural expression. Thus, the purpose is to highlight the debate, not take sides.

Choices A, B, and D are one-sided. Balanced framing, common on LSAT RC, makes C correct.

The conclusion assumes wetlands themselves explain reduced flooding. For this to hold, other infrastructure like levees cannot fully account for the effect. Choice A is the required assumption.

Choices B, C, and D are irrelevant. LSAT assumption questions often require ruling out rival causes—A is correct.

The passage reframes indigenous practices as sustainable and adaptive. Thus, B is the main conclusion.

Choices A and C reflect outdated assumptions. Choice D is irrelevant. RC conclusion questions often emphasize revised scholarly perspectives—B is correct.

The passage highlights a change in scholarly understanding: from sudden revolutions to gradual, experimental transitions. Thus, the author’s main point is that agricultural shifts happened slowly with overlap between methods.

Choices A and B reflect outdated assumptions. Choice D introduces a judgment absent in the text. RC main point questions require identifying the author’s conclusion, and C best summarizes it.

The economist argues from correlation to causation. For the reasoning to hold, it must be true that other factors—such as cultural or social norms—are not solely responsible for the observed higher innovation. Choice B articulates this assumption.

Choice A is irrelevant. Choice C is too absolute and unnecessary. Choice D is factually incorrect and too extreme. LSAT assumption questions focus on identifying the hidden bridge, and B provides it.