Correct Answer: C

Rationale: The main clause is the independent clause that can stand alone as a complete sentence. In this sentence, 'She finished her work on time' is the main clause because it expresses a complete thought independently. Choices A and B are subordinate clauses as they cannot stand alone as complete sentences. Choice D lacks the subject 'she,' making it incomplete and not a main clause.

Correct Answer: A

Rationale: The sentence lacks parallel structure. The list of actions in the sentence should be presented in the same grammatical form. 'Travel to Italy,' 'take a Mediterranean cruise,' and 'go to Pompeii' should all be in the same form. To correct this, the sentence should be revised to: 'travel to Italy, take a Mediterranean cruise, visit Pompeii, and eat a lot of Italian food.' Choices B, C, and D are incorrect. The sentence is a complete sentence, not a fragment. There are no misplaced modifiers, and subject-verb agreement is not the issue in this sentence.

Correct Answer: C

Rationale: The prefix 'intra-' means 'within,' so 'intravenous' refers to something within veins. Choice A, 'Across veins,' is incorrect as 'intra-' does not indicate movement across but within. Choice B, 'Between veins,' is incorrect because 'intra-' does not imply a relationship between two separate veins. Choice D, 'Outside veins,' is incorrect as 'intra-' signifies something inside or within, not outside.

Correct Answer: A

Rationale: In the sentence provided, the words that function as nouns are 'Robert,' 'sources,' 'project,' 'databases,' and 'research.' These words are all objects or concepts that can be referenced or identified in a sentence as nouns. Choice B includes adjectives ('final,' 'academic') which describe other nouns rather than being nouns themselves. Choice C includes a pronoun ('he') which is not a noun. Choice D lacks the noun 'Robert' which is a subject in the sentence.

Correct Answer: D

Rationale: In the sentence provided, the word 'function' is used as a noun to refer to an event or gathering. Nouns name people, places, things, or ideas, and in this case, 'function' is a thing (an event), so it functions as a noun. Adjectives describe nouns, adverbs modify verbs, and verbs express actions or states, none of which apply to the word 'function' in the sentence. Therefore, the correct answer is 'D: Noun.' Choices 'A: Adjective,' 'B: Adverb,' and 'C: Verb' are incorrect because 'function' in this context isn't being used to describe, modify, or express an action; it is naming an event.