what is the best description for the word efficacy in the following sentence the quality safety and efficacy of counterfeit medicines are not known
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HESI A2

Vocabulary HESI A2

1. What is the best description for the word efficacy in the following sentence? The quality, safety, and efficacy of counterfeit medicines are not known.

Correct answer: A

Rationale: In the context of the sentence provided, efficacy refers to the ability of counterfeit medicines to produce the intended or desired effect. Efficacy is closely related to effectiveness, which is the correct description in this context. 'Significance' (Choice B), 'Corollary' (Choice C), and 'Conclusion' (Choice D) do not accurately capture the meaning of efficacy in this context.

2. What is the CORRECT CONTRACTION for 'They are'?

Correct answer: B

Rationale: The correct contraction for 'They are' is 'They're.' 'Their' is a possessive pronoun indicating ownership, not a contraction. 'The're' is not a valid contraction. 'No contraction used' is incorrect as there is a contraction for 'They are,' which is 'They're.'

3. There was no _____ for the way she treated her boyfriend.

Correct answer: D

Rationale: The correct answer is 'D: Justification.' Justification means showing that an action is reasonable or right. In this context, it implies that there was no valid reason or excuse for the way she treated her boyfriend. Choices A, B, and C are incorrect. An 'alibi' is an excuse to explain one's whereabouts during a crime, not applicable here. 'Rational' means based on reason or logic, which does not fit the context of the sentence. 'Reasonable' means fair and sensible, but the sentence suggests a lack of valid explanation rather than fairness or sensibility.

4. What does 'Inferior' mean?

Correct answer: B

Rationale: The correct answer is 'Below.' Inferior means being in a lower position or rank compared to something else. Choice A ('Above') is incorrect as it represents the opposite of inferior. Choice C ('On the side') and Choice D ('In the middle') are also incorrect as they do not reflect the meaning of inferior, which conveys a sense of being lower in position or rank.

5. What does 'lethargic' mean?

Correct answer: B

Rationale: Lethargic refers to a state of sluggishness or drowsiness, making it difficult for a person to become alert or aroused. This term is the opposite of being active, energized, or wide awake. Choice A is incorrect as 'lethargic' is the opposite of 'active.' Choice C is incorrect as 'lethargic' implies a lack of energy. Choice D is incorrect as 'lethargic' signifies drowsiness, the opposite of being 'wide awake.' The correct answer is B.

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