Correct Answer: B

Rationale: The inference that can be made is that medical mistakes can happen even at the best hospitals.

Correct Answer: D

Rationale: The correct answer is D: 'Used clothing stores may harbor MRSA.' This statement is not supported by the passage. The passage mentions the spread of MRSA in hospitals, gyms, locker rooms, swimming pools, and other settings with frequent human contact, but it does not mention used clothing stores as a common location for MRSA. Therefore, it is an unlikely inference. Choice A is supported by the passage as it discusses the development of a new textile to halt the spread of hospital-associated MRSA. Choice B is also supported as the passage mentions MRSA as a skin infection. Choice C is supported by the passage as it states that MRSA has become ubiquitous in settings with frequent human contact.

Correct Answer: B

Rationale: The passage discusses the revision of the food pyramid specifically to address the unique dietary needs of seniors. It emphasizes how the changes were made based on ongoing research and analysis, indicating a broader focus on senior nutrition rather than just individual nutrients or exercise. Thus, option B captures the essence of the passage as it succinctly summarizes the main idea.

Correct Answer: B

Rationale: The correct answer is B. The reader can infer that the 'sweatiest students' have worked harder during class. This inference is supported by the context that students are graded based on the effort they make in the class, with some even receiving extra credit for being the sweatiest students in the room. Choice A is incorrect as there is no indication in the passage that the sweatiest students are more physically active than others; they are recognized for their effort, not necessarily for being the most active. Choice C is incorrect as the passage does not discuss the academic performance of the sweatiest students. Choice D is incorrect as there is no evidence to suggest that the sweatiest students excel in all sports activities; they are acknowledged for their effort rather than their overall sports performance.

Correct Answer: C

Rationale: The correct answer is C because it is an opinion rather than a verifiable fact. The statement suggests a recommendation for hospitals to adopt new germ-fighting textiles swiftly, which is a subjective viewpoint and not objectively measurable. Choices A and B are factual statements regarding combating MRSA infection and antibiotic resistance, respectively. Choice D provides a comparison of MRSA infection with HIV/AIDS, which is a factual statement based on statistical data. Therefore, C is the only choice that presents an opinion rather than a fact.