Correct Answer: C

Rationale: The word 'posthumous' in this sentence means occurring or coming into effect after the person's death. It is related to the word 'postmortem,' which also refers to events or actions happening after death. Given the context of the sentence, the most suitable meaning is 'postmortem.' Choice A, 'generous,' does not accurately reflect the meaning of 'posthumous' in the sentence. Choice B, 'immense,' is unrelated to the concept of something happening after a person's death. Choice D, 'time-honored,' is also not synonymous with 'posthumous' and does not fit the context of the sentence.

Correct Answer: A

Rationale: In the context of the sentence, 'volatile' means likely to change rapidly and unpredictably or evaporate quickly. When referring to liquids, volatile typically implies that the liquids are unstable and can easily change from liquid to gas. Therefore, the most appropriate meaning of 'volatile' in this sentence is 'unstable.' Choices B, C, and D are incorrect because 'abnormal' and 'lethal' do not capture the essence of rapid change or evaporation associated with volatile liquids, while 'blended' is unrelated to the characteristics of volatile liquids described in the sentence.

Correct Answer: B

Rationale: The term euphoric is best described as high-spirited. Euphoria is a feeling of intense happiness and excitement, so high-spirited accurately conveys the meaning of euphoric. Choices A, C, and D do not capture the essence of euphoria. 'Disease-ridden' has a negative connotation and is unrelated to euphoric. 'Pretentious' means attempting to impress by affecting greater importance, talent, culture, etc., than is actually possessed, which is not synonymous with euphoric. 'Understated' means presented or expressed in a subtle and effective way, which is not the meaning of euphoric.

Correct Answer: C

Rationale: An overt symptom is a symptom that is easily noticeable or observable. It is not hidden or controlled, but rather overt and easily seen or identified by others. Therefore, the correct answer is C, 'obvious.' 'Dangerous' (choice A) does not describe the visibility of a symptom but rather its potential harm. 'Hidden' (choice B) is the opposite of overt, meaning not easily visible. 'Controlled' (choice D) does not relate to the visibility of a symptom but rather implies regulation or management.'

Correct Answer: C

Rationale: The correct answer is C: 'Read thoroughly.' The word 'perused' means to read or examine carefully or in detail. It does not imply passing judgment, engaging in, or taking notes. Choices A, B, and D are incorrect because 'perused' specifically refers to reading thoroughly, not making judgments, participating in, or taking notes.