Correct Answer: B

Rationale: Labile means something that changes rapidly and often. In this context, 'Stable' (Choice A) is the opposite of labile, 'Unchanging' (Choice C) and 'Rarely changing' (Choice D) do not capture the essence of labile. Labile is specifically used to describe something that is easily altered, constantly changing, or unstable, hence the most suitable choice is 'Changing rapidly and often' (Choice B).

Correct Answer: C

Rationale: The term 'PROGNOSIS' refers to the expected outcome or likelihood of recovery after a specific treatment or illness. In this context, the word 'PROGNOSIS' directly relates to the expected outcome following the treatment, making choice C - Expected outcome - the correct answer. Choices A, B, and D are incorrect because 'Compliance' refers to following instructions, 'Range of motion' relates to the extent of movement in a joint, and 'Conclusion' is a summary or final decision, none of which captures the meaning of 'PROGNOSIS.'

Correct Answer: B

Rationale: The correct answer is B, 'Vague.' Nebulous means something that is vague or unclear. Choice A, 'Clear,' is incorrect as it represents the opposite meaning of nebulous. Choice C, 'Precise,' is incorrect as it denotes clarity and exactness, which is the opposite of nebulous. Choice D, 'Obvious,' is also incorrect as it implies something that is easily understood or seen, unlike nebulous which refers to something unclear or hazy.

Correct Answer: D

Rationale: The correct answer is D, 'effect.' The verb 'effect' is defined as to bring about, cause to happen, accomplish, or make. It describes the action of making something happen or producing a result. Choices A, B, and C are incorrect because 'affect' means to influence, 'accept' means to receive willingly, and 'expect' means to anticipate. Therefore, the correct choice is D, 'effect.'

Correct Answer: B

Rationale: The correct answer is B: 'Reddened or ruddy appearance.' When someone is flushed, it means they have a red or ruddy complexion, often due to embarrassment, anger, or a physical reaction. Choices A, C, and D are incorrect because 'flushed' specifically refers to a red or ruddy appearance, not swelling, discoloration, or paleness.