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.
NEED MORE DETAIL TO ANSWER THIS QUESTION
Empathy is when someone understands and shared the feelings of others. Sympathy is when you feel sorry for someone else
During his midnight ride Revere only made it to Lexington where he stopped to warn patriot's leaders Samuel Adams and John Hancock. Revere then set off to ride another 7 miles further to Concord but on his was he was captured by British patrol. He soon managed to escape.