The correct answer is option B.
Adverb clauses modify a verb, another adverb or an adjective. They are introduced by subordinate conjunctions such as "although," "as," "if," "than," "until" and "while."
In the example, the adverb clause (as... as) is modifying the adjective it sorrounds.
Option A, "Andrea", is a noun, so it cannot be modified by an adverb clause.
Even though adverb clauses can modify verbs such as "know", alternative C is not possible either because it is clear that the adverb clause (as... as) holds within an adjective to modify.
I would probably answer with B, because facial expressions would tell if the reader is pleased, annoyed, saddened, ect. by the content :)
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To add suspense and keep readers engaged
Answer:
He wanted to indicate his strong support for the program, and this [speech] was the chance to do it." At Rice, Kennedy stressed that humanity's charge into space is inexorable, and that the world would be better off with the United States leading the way
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