Which of the following is a correctly punctuated compound sentence?

Correct Answer: A

Rationale: Choice A is the correct answer as it presents a correctly punctuated compound sentence. It consists of two independent clauses separated by a comma and the coordinating conjunction 'and.' This punctuation accurately connects the two related ideas. Choice B is incorrect because it lacks a comma before the coordinating conjunction 'and,' making it a run-on sentence. Choice C is incorrect due to the use of a semicolon before the coordinating conjunction 'but,' which is unnecessary in this context. Choice D is incorrect as it lacks a comma before the coordinating conjunction 'but,' resulting in a comma splice error.

Correct Answer: B

Rationale: The topic sentence in a paragraph typically introduces the main idea or topic of the paragraph. In this case, choice B correctly serves as the topic sentence by clearly stating that gingivitis is a mild form of gum disease caused by bacteria that leads to inflammation of the gums. Choices A, C, and D provide additional information that supports or follows the main idea but do not present the overarching topic of the paragraph.

Correct Answer: C

Rationale: The sentence discusses evidence and clinical trials related to a specific therapy, indicating a scientific context. Scientific journal articles are known for presenting research findings, discussing evidence, and proposing further studies, making them the most suitable source for this type of information. Choices A, B, and D are incorrect because a motivational speech is more focused on inspiring and encouraging, a business memo typically deals with internal communication in organizations, and a personal blog reflects individual opinions or experiences, none of which align with the content and tone of the sentence provided.

Correct Answer: A

Rationale: The correct answer is 'Dyskinesia.' By breaking down the word parts, 'dys-' means difficult or abnormal, and '-kinesia' refers to movement. Therefore, 'Dyskinesia' means an abnormality of movement. Choice B, 'Hyperkinesia,' is incorrect as 'hyper-' means excessive, not abnormal. Choice C, 'Akinesia,' is incorrect as 'a-' means without, not abnormal. Choice D, 'Hypokinesia,' is incorrect as 'hypo-' means deficient, not abnormal.

Correct Answer: C

Rationale: The correct answer is C because during the prewriting stage, writers engage in activities like mind mapping and free writing to brainstorm ideas and organize their thoughts before starting the actual writing process. Choice A is incorrect because finalizing the works cited page is typically done during the later stages of writing. Choice B is incorrect as the first draft is usually created during the drafting stage, not prewriting. Choice D is incorrect since copy editing and proofreading are tasks carried out in the revising and editing stages, not during prewriting.