Correct Answer: C

Rationale: The central idea of the passage is to highlight the significance of understanding insects in ecosystems, not just focusing on their adaptability or life transitions. Choice A is incorrect as the passage does not introduce specific insects transitioning from water to air. Choice B is incorrect as the main focus is not solely on how insects adapt to their environment, but on their broader role in ecosystems. Choice D is incorrect as the passage does not discuss the duality of insect life, but rather their importance in the ecosystem.

Correct Answer: D

Rationale: The final comment in the passage indicates that Mr. Utterson intends to keep searching for Mr. Hyde, showing his determination. The passage describes how Mr. Utterson is troubled by questions about Hyde, engaging not just his intellect but also his imagination. Despite the lack of information obtained from Lanyon, Mr. Utterson continues to ponder the problem late into the night, suggesting his commitment to uncovering the mystery. Choices A, B, and C are incorrect because there is no indication in the passage that the speaker is considering a name change, experiencing an identity crisis, or mistakenly looking for the wrong person. The passage focuses on Mr. Utterson's persistent search for Hyde, emphasizing his unwavering resolve.

Correct Answer: C

Rationale: In the provided passage, 'mind' refers to a definitive decision. The context indicates that the emperor made a conscious decision to entertain the speaker with country shows. Choice A, 'The ability to think,' is too broad and does not capture the specific decision-making aspect implied in the passage. Choice B, 'A collective vote,' and Choice D, 'A mythological question,' are irrelevant and do not align with the context provided.

Correct Answer: D

Rationale: The 900 section contains works on history, geography, and biography, which is where Jorgen is likely to find early maps by Eratosthenes. Eratosthenes was not only a mathematician but also a geographer, so his maps would be classified under history and geography, making Section 900 the most appropriate choice. Sections 100, 300, and 600 do not specifically cater to history, geography, or biography where Eratosthenes' early maps would be located.

Correct Answer: D

Rationale: The best advice for the student would be to locate texts in the library related to World War II in America and look for references to internment camps. This choice is the most appropriate as it focuses on accessing specific and credible sources directly related to the research topic. Choices A and C are too broad and may not provide in-depth information on the internment camps. Choice B, while related to American history, may not offer the specific details needed for the research assignment on Japanese-American internment camps during World War II.