Correct Answer: B

Rationale: Efficacy refers to how effective something is. In this context, it refers to the effectiveness of the new medicines. 'Cost' (Choice A) is incorrect as it relates to the price of something, not its effectiveness. 'Quality' (Choice C) is incorrect as it refers to the standard or degree of excellence. 'Usage' (Choice D) is incorrect as it refers to how something is used, not its effectiveness.

Correct Answer: A

Rationale: The word 'exacerbated' means to make a problem, bad situation, or negative feeling worse. If someone is frustrated or annoyed, they are likely feeling worse due to a particular situation or circumstance. Choice B, 'transient,' means temporary or short-lived, which does not directly relate to the feeling of being frustrated or annoyed. Choice C, 'lithe,' means thin, supple, and graceful, which is not synonymous with being frustrated or annoyed. Choice D, 'terse,' means brief and to the point, which is unrelated to the context of feeling frustrated or annoyed.

Correct Answer: B

Rationale: The correct answer is B: Cure. A panacea is a remedy or cure for all diseases. While 'poison' (choice A) is the opposite of a cure, 'treatment' (choice C) is a general approach to addressing an illness rather than a universal solution, and 'remedy' (choice D) is synonymous with cure but not as closely related to the concept of a universal remedy as 'cure'.

Correct Answer: B

Rationale: The correct answer is B: 'Present but not active or visible.' Latent refers to something that is existing but not yet developed or manifest. Choice A, 'Easily seen,' is incorrect as latent implies the opposite - not easily seen. Choice C, 'Quick to react,' is incorrect as latent does not imply a quick reaction but rather a hidden or dormant state. Choice D, 'Actively growing,' is incorrect as latent suggests the opposite - not actively growing but rather inactive or concealed.

Correct Answer: A

Rationale: In the context provided, the correct answer is 'university.' The term 'university' is used to refer to higher education institutions that offer undergraduate and postgraduate degrees. While 'academy,' 'college,' and 'institute' are also types of educational institutions, 'university' is the most fitting choice here as it best aligns with the idea of completing higher education before joining the army.