Correct Answer: B

Rationale: The correct answer is B: 'A deficiency or lack of something.' The term 'deficit' refers to a shortage or inadequacy of something. Choice A is incorrect because a surplus means an excess, which is the opposite of a deficit. Choice C is incorrect as an abundance signifies a large quantity or more than enough of something. Choice D is incorrect as a stable amount does not convey the concept of a deficit.

Correct Answer: A

Rationale: To buttress a fence means to reinforce or support it, typically by adding extra material or structures to prevent it from falling apart. In this scenario, the homeowner needs to strengthen the deteriorating section of the fence, making 'buttress' the correct answer. 'Degrade' means to diminish in quality, which is the opposite of what the homeowner should do. 'Hinder' means to create obstacles or difficulties, not a solution for the falling fence. 'Flounder' means to struggle or fail, which is not related to repairing the fence.

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.

Correct Answer: A

Rationale: The correct answer is A: Dejected. After becoming INVALID, one is likely to feel dejected, meaning sad and disheartened due to feeling invalidated or rejected. It is a common emotional response to a situation where one's worth or validity is questioned or denied. Option B, shamefully fearful, does not directly relate to the emotional state associated with being an invalid. Option C, injured, does not capture the emotional aspect but rather focuses on the physical condition. Option D, symbiotic, refers to a mutually beneficial relationship between two different organisms and is not relevant to the emotional state of an individual after becoming an invalid.

Correct Answer: B

Rationale: The correct answer is 'B: Entering into a body part.' 'Invasive' refers to something that invades or penetrates into a body part. Choice A, 'Harmless,' is incorrect as invasive implies a negative impact. Choice C, 'Mildly irritating,' is incorrect as invasive implies a more serious intrusion. Choice D, 'Non-penetrative,' is incorrect as invasive specifically denotes penetration or entry.