Correct Answer: D

Rationale: The correct answer is 'D' because the phrase 'and played an instrumental role' provides a smoother transition between the two ideas. In this context, using 'and' helps to connect the two activities more effectively. Choice 'B' introduces a contrasting conjunction 'but,' which is not suitable in this context where the actions are related. Choice 'C' incorrectly separates the two actions into distinct sentences, affecting the flow and coherence of the paragraph. Therefore, 'D' is the best choice for combining the sentences for clarity and flow.

Correct Answer: B

Rationale: The correct answer is B: Comma splice. A comma splice is present in the sentence, where two independent clauses are incorrectly joined by a comma. In this case, 'Some workers use all their sick leave' and 'other workers cash out their leave' are two independent clauses that should be separated by a conjunction or a stronger punctuation mark like a semicolon or period. Choice A, parallelism, is incorrect because the error in the sentence is not related to maintaining parallel structure. Choice C, sentence fragment, is incorrect as the sentence contains two independent clauses, not fragments. Choice D, subject-verb agreement, is also incorrect as the error in the sentence does not involve agreement between subjects and verbs.

Correct Answer: D

Rationale: The correct answer is D, 'Noun phrase.' In the sentence 'New students should report to the student center,' the underlined portion 'new students' is a noun phrase functioning as the subject of the sentence. A dependent clause is a group of words with a subject and verb that does not express a complete thought, which is not the case here. An adverbial phrase modifies a verb, adjective, or adverb and typically answers questions like 'how,' 'when,' 'where,' or 'why,' which is not applicable in this context. An adjective clause is a group of words that describe a noun, but 'new students' in the sentence is not serving as a descriptive element of another noun; instead, it is the main subject.

Correct Answer: C

Rationale: The sentence is classified as complex because it contains one independent clause 'The restaurant is unconventional' and one dependent clause 'because it serves both Chicago-style pizza and New York-style pizza.' A simple sentence consists of just one independent clause, a compound sentence contains two or more independent clauses, and a compound-complex sentence has at least two independent clauses and one or more dependent clauses. In this sentence, the dependent clause 'because it serves both Chicago-style pizza and New York-style pizza' cannot stand alone as a complete sentence, making it a complex sentence structure.

Correct Answer: D

Rationale: The correct answer is 'Charlotte's new German shepherd puppy.' A noun phrase consists of a noun and any modifiers that go along with it. In this sentence, 'Charlotte's new German shepherd puppy' is a noun phrase because it includes the noun 'puppy' along with the modifiers 'Charlotte's,' 'new,' and 'German shepherd.' 'Puppy' alone (choice A) is not the complete noun phrase in this context as it lacks the modifiers. 'Charlotte' (choice B) is just a single noun and does not include the full descriptive phrase. 'German shepherd puppy' (choice C) is also not the complete noun phrase as it is missing the possessive 'Charlotte's' and 'new.' Therefore, the most appropriate noun phrase in the sentence is 'Charlotte's new German shepherd puppy.'