Correct Answer: B

Rationale: The correct answer is B: 'It's a beautiful day outside.' 'It's' is the contraction for 'it is.' Choice A is incorrect as it should be 'It's' instead of 'Its.' Choice C is incorrect as the apostrophe should come before the 's' in the contraction. Choice D is incorrect as the use of 'is'' is grammatically incorrect.

Correct Answer: C

Rationale: The correct answer is 'C: imitate.' In the sentence, it is explicitly stated that Felicia would often imitate her big sister, which directly relates to the meaning of 'emulate' as to copy or imitate someone else. 'Tried' (choice A) does not provide a direct connection to the definition of 'emulate.' 'Often' (choice B) and 'way' (choice D) are not directly associated with the act of imitating or copying, making them less relevant context clues for defining 'emulate.'

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 informal tone and casual language, such as 'hey wait' and 'what are you up to tonight, anyways?' suggest that the speaker is a friend inquiring about the plans of another friend. This type of conversation is typical among peers and not in a professional setting, ruling out choices A and D. Choice B is incorrect because there is no indication of a debate or formal speech practice in the conversation.

Correct Answer: A

Rationale: Choice A uses proper dialogue punctuation. The comma appears inside the closing quotation mark after 'make it,' and 'you' remains lowercase because it continues the same sentence. In Choice B, there is a period instead of a comma after 'answered,' breaking the sentence incorrectly. Choice C incorrectly places the comma outside the quotation mark after 'make it.' Choice D, similar to Choice B, uses a period instead of a comma after 'answered,' leading to incorrect punctuation.