The following text is from a philosophy of biology article.
The units of selection debate asks at what level natural selection operates. Gene selectionists emphasize replicators as ultimate beneficiaries; group selectionists argue that selection can operate on collectives. Multilevel selection frameworks attempt to reconcile these perspectives by tracking selection at multiple hierarchical levels simultaneously. The controversy has practical import for understanding cooperative behavior, altruism, and major evolutionary transitions.
Which choice best describes the function of the last sentence?
It provides specific examples of natural selection at work.
It indicates the practical significance of the theoretical debate.
It resolves the units of selection controversy definitively.
It introduces a new topic about genetic engineering.
Correct Answer: B
Choice B is the best answer. The last sentence notes the controversy's "practical import" for understanding behaviors and transitions—its significance.
- Evidence: The sentence states: "The controversy has practical import for understanding cooperative behavior, altruism, and major evolutionary transitions."
- Reasoning: It explains why the theoretical debate matters in the real world of biology.
- Conclusion: The function is to indicate practical significance.
đź’ˇ Strategy: Look for "practical import for understanding."
Choice A is incorrect because specific examples aren't given. Choice C is incorrect because the debate continues. Choice D is incorrect because engineering isn't introduced.