Correct Answer: C

Rationale: The correct answer is C, 'Surveillance,' which means 'under observation.' 'Cognition' (A) refers to mental processes, 'Isolation' (B) means being separated from others, and 'Assessment' (D) is the evaluation of something, none of which directly relate to being observed.

Correct Answer: C

Rationale: The sentence implies a cause-and-effect relationship, so 'because' is the appropriate conjunction. 'Nor' is used in negative constructions, 'Yet' indicates contrast, and 'So' is used to show a consequence, none of which fit the context of the sentence.

Correct Answer: A

Rationale: The correct answer is A, 'Toxic.' 'Injurious' means harmful or likely to cause injury, similar to 'toxic.' Choices B, C, and D are incorrect because 'palatable' means pleasant to taste, 'amenable' means cooperative or willing to agree, and 'harmless' means not causing harm.

Correct Answer: A

Rationale: The correct answer is A: 'Confinement away from the general population.' Quarantine refers to keeping someone isolated from the general population to prevent the spread of disease. Choice B, 'A specialist's care,' is incorrect as it refers to medical treatment by a specialist, not isolation. Choice C, 'Experimental drug therapy,' is incorrect as it involves the administration of new drugs for research purposes, not isolation. Choice D, 'Imprisonment in a rehabilitation unit,' is incorrect as it implies being detained in a rehabilitation facility, not isolation for health reasons.

Correct Answer: C

Rationale: The correct answer is C: 'Not affected.' In the context provided, 'impervious' means that the client is not affected by pain. Choices A, B, and D are incorrect because they do not accurately capture the meaning of 'impervious' in this context. 'Coping well' implies dealing with pain effectively, 'enjoying' does not reflect being unaffected by pain, and 'very sensitive' is the opposite of what 'impervious' means.