Correct Answer: B

Rationale: The passage mentions reduced blood pressure, improved memory, and alleviated depression as potential benefits of omega-3s but does not mention a reduced risk of diabetes.

Correct Answer: C

Rationale: The correct answer is C. The passage clearly states that for Lyme disease to spread, a tick must feed on an infected host, such as a mouse or squirrel. This conclusion can be drawn from the information provided in the extract. Choice A is incorrect because the passage does not specify that humans are the only mammals that exhibit symptoms when infected by Borrelia burgdorferi. Choice B is incorrect as the passage mentions that the life cycle of an uninfected tick includes a dormant phase before the nymph stage, without excluding it. Choice D is incorrect because the passage does not state that the combination of fever, headache, and joint pain is a definitive sign of Lyme disease.

Correct Answer: B

Rationale: "Disparate" means diverse or different. The passage discusses how Lyme disease has various symptoms that mimic other diseases, making it difficult to diagnose.

Correct Answer: A

Rationale: The word "serendipity" refers to a fortunate coincidence or chance, describing how Beto P©rez invented Zumba accidentally.

Correct Answer: C

Rationale: The passage suggests that NASA will use the findings from the twin study to plan future extended space missions.