Correct Answer: C

Rationale: Choice C is the correct answer. The sentence is punctuated correctly with commas separating the city, state, and the rest of the sentence. In Choice A, there should be a comma after 'California' to correctly separate the city and state. Choice B lacks a comma after 'California,' creating a run-on sentence. Choice D incorrectly uses a comma before the year '2011,' which disrupts the flow of the sentence.

Correct Answer: A

Rationale: The comma after 'think' is unnecessary and incorrect. It should be removed to correct the sentence. The semicolon after 'do' is correct as it separates two independent clauses. The period at the end of the sentence is necessary to indicate the end of the sentence. The comma after 'and yet' is correctly used to separate two independent clauses joined by a coordinating conjunction.

Correct Answer: A

Rationale: The correct answer is 'A: Digs.' In this context, 'digs' is a slang term that means 'likes' or 'enjoys.' The other choices are not slang terms. 'Classical' is a music genre, 'totally' is an adverb emphasizing 'jarring,' and 'jarring' describes something that is shocking or unsettling.

Correct Answer: A

Rationale: The correct contraction to use in this sentence is 'who's,' which is short for 'who is.' In the given context, 'who's' indicates the correct possessive form, clarifying that the clients are confused about who is in charge. Choice B, 'Whos,' is incorrect as it does not use an apostrophe to indicate the omitted letter. Choice C, 'Who'll,' is incorrect as it is a contraction for 'who will,' which does not fit the context of the sentence. Choice D, 'Who,' is incorrect as it is not a contraction and does not clarify the intended meaning of the sentence.

Correct Answer: A

Rationale: The correct answer is A: 'Performed by one person.' 'Unilateral' means something done by one person or group without the agreement of another. Choice B is incorrect as it suggests the opposite of what 'unilateral' means. Choice C is incorrect as it does not capture the essence of 'unilateral.' Choice D is incorrect as it is not directly related to the definition of 'unilateral.'