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 answer is B: 'Regretful.' Contrite means feeling regret or remorse. 'Guilty' (A) refers to being responsible for a wrongdoing, not necessarily feeling remorseful. 'Shameful' (C) means feeling ashamed, which is related but not the same as feeling regret. 'Pleased' (D) means feeling satisfied or happy, which is the opposite of contrite.

Correct Answer: A

Rationale: The correct choice is A - Affable (friendly). Affable means friendly and easy to get along with, which aligns with the description of the new manager in the sentence. Choice B, Tortuous, means twisting or complicated, which does not describe the manager's demeanor. Choice C, Apathetic, means showing no interest or enthusiasm, which is the opposite of the manager being easy to get along with. Choice D, Sacrosanct, means holy or sacred, which is not relevant to the context of the sentence.

Correct Answer: B

Rationale: The term 'Gravid' means being pregnant or expecting a child. Therefore, the correct answer is B. Choice A, 'Thin,' is incorrect as it does not relate to the term Gravid. Choice C, 'Infected,' is also incorrect as it is not a relevant description of the term. Choice D, 'Healing,' is unrelated to the term Gravid and is therefore incorrect.

Correct Answer: D

Rationale: The sentence 'He runs fast' uses 'fast' correctly as an adverb. An adverb is used to describe a verb and in this case, 'fast' is describing how 'he runs.' Choices A, B, and C use 'fast' as an adjective, not an adverb. In choice A, 'fast' is describing the car, in choice B it is describing how the car drove, and in choice C it is describing the runner.