Correct Answer: D

Rationale: If illegal operators are posing as licensed pharmacists, they are pretending to be licensed pharmacists when they are not. This deceptive behavior is misleading and potentially dangerous for consumers seeking legitimate medical advice and products. Choice A, modeling, implies imitating behavior or appearance, which is not the case here. Choice B, inquiring, suggests seeking information or asking questions, which is not the correct behavior in this context. Choice C, positioning, refers to arranging or placing things in a particular way, which is not relevant to the situation described in the question.

Correct Answer: D

Rationale: The word "acute" in this sentence means intense. Acute pain is sharp or severe, which accurately describes the level of pain experienced during childbirth. Choice A, "Escalating," suggests increasing pain over time, which is not necessarily implied by the word "acute." Choice B, "Emergent," means arising or coming into view, which does not capture the intensity of the pain. Choice C, "Eased," means to make less severe, which is the opposite of what is described in the sentence.

Correct Answer: B

Rationale: A treatment that is detrimental is considered destructive because it causes harm or damage rather than benefiting the individual. In this context, 'detrimental' implies that the treatment has negative effects and is harmful rather than helpful. Choices A, C, and D are incorrect because a detrimental treatment is not risk-free, agonizing, or effective; instead, it is harmful and damaging.

Correct Answer: A

Rationale: The word 'deleterious' means causing harm or damage. In this context, the sentence implies that the chemicals in plastic containers can be harmful to children's health. Therefore, the correct meaning of the underlined word is 'harmful,' making option A the most suitable choice. Option B 'Deleting' is incorrect because it refers to removing or erasing, which does not fit the context. Option C 'Delightful' is incorrect as it means causing great pleasure or delight, the opposite of the intended meaning. Option D 'Inoffensive' is incorrect as it means not causing any harm or annoyance, which is contrary to the negative impact described in the sentence.

Correct Answer: D

Rationale: The word 'distinctive' means having a quality that makes something unique or easily recognizable. In the context of the sentence provided, the clear, yellowish liquid with a peculiar ethereal, fruity odor is being described as having a noticeable and unique quality. Choice A, 'aerated,' means to introduce air into a substance, which does not fit the description of the liquid in the sentence. Choice B, 'incapacitating,' means to deprive of strength or ability, which is not relevant to the description of the liquid. Choice C, 'delicate,' means fragile or easily broken, and while it is somewhat related to the context of the sentence, it does not fully capture the unique and recognizable aspect described in the sentence.