Correct Answer: C

Rationale: The word 'ephemeral' means lasting for a very short time. In this context, a vacationer feeling that their trip to Hawaii was too short implies that they found it to be brief or fleeting, making 'ephemeral' the most suitable choice among the options provided. Ponderous means slow and clumsy; salacious means obscene or lustful; erudite means showing great knowledge or learning. These words do not convey the idea of brevity or shortness, unlike 'ephemeral,' which perfectly fits the scenario described.

Correct Answer: A

Rationale: The correct answer is 'A: his injury.' In the context of completing a race, an injury would be a significant obstacle to overcome. While choices B, C, and D could also pose challenges, an injury is the most severe hindrance that would make completing a race particularly difficult. His condition, pain, or fatigue may affect performance, but they are not as directly impactful as an injury in this scenario.

Correct Answer: B

Rationale: The correct meaning of the word 'Augment' is 'to add to something.' Therefore, choice B, 'Add to,' is the correct answer. Choices A, C, and D are incorrect because they all suggest actions that involve reducing or decreasing something, which is the opposite of augmenting.

Correct Answer: B

Rationale: Manifestation means an indication or sign of a condition. It is not a treatment plan (choice C) or a type of diagnosis (choice D). While choice A is close, 'symptom' is more specific than 'indication' in this context, making choice B the most accurate.

Correct Answer: B

Rationale: The correct answer is B: Rush. To expedite means to accelerate the progress or speed of something, to hasten or facilitate. 'Transfer' (choice A) means to move from one place to another, 'Cancel' (choice C) means to call off, and 'Hold' (choice D) means to keep or detain. Therefore, 'Rush' is the most appropriate synonym for expedite in this context.