Correct Answer: D

Rationale: The correct answer is 'Not enough.' The prefix 'hypo-' means 'under' or 'not enough,' as seen in the word 'hypokalemia,' which refers to low levels of potassium. 'Better' (choice A), 'Above' (choice B), and 'Too much' (choice C) are all incorrect because they do not convey the meaning of insufficient or low levels associated with hypokalemia.

Correct Answer: C

Rationale: The complete subject in a sentence refers to the noun or pronoun that the sentence is about. In this case, the complete subject is 'The cherry tomatoes in our backyard.' It includes all the words that describe the subject and provide more specific information about it. 'Tomatoes' (Choice A) is just a part of the complete subject and not the entire subject. 'Ready to be picked' (Choice B) is a verb phrase, not the subject of the sentence. 'Finally ready' (Choice D) is an adjective phrase, not the subject of the sentence. Therefore, the correct choice is 'The cherry tomatoes in our backyard.'

Correct Answer: C

Rationale: 'Although' is a conjunction because it connects two clauses in the sentence. In the given sentence, 'although' introduces a dependent clause ('although I could use the opportunity more than I'd like to admit') and connects it to the independent clause ('Surely, he thought, I can't trust this enticing yet dubious offer'). This conjunction shows the contrast between the two ideas. Choices A, B, and D are incorrect because 'although' does not function as an adverb, preposition, or adjective in this context.

Correct Answer: C

Rationale: The correct answer is 'C: Quickly.' Adverbs modify verbs, adjectives, or other adverbs. In this sentence, 'quickly' describes how she finished her homework. Choice A 'She' is a pronoun, choice B 'Finished' is the verb, and choice D 'Homework' is a noun, making them incorrect choices for adverbs.

Correct Answer: A

Rationale: The correct answer is A - 'Went to the store yesterday.' This sentence is a fragment because it lacks a subject. A complete sentence should have both a subject and a verb. Choice B, C, and D are all complete sentences as they have both a subject ('She') and a verb ('went'). Therefore, they are not fragments.