I believe the answer is B
The answer to the question above is the following one:
a) The concert that I attended was held last August.
A is a restrictive clause because it modifies the noun it precedes. It provides essential information as regards the sentence. If it was dropped, the sentence would not have the same meaning.
b) The audience moved as one, the crowd swaying the music.
B is an absolute phrase. Absolute phrases are phrases that modify a noun in a sentence but they are not connected to the sentence by a conjunction. They are set off with a comma and can be deleted from the sentence without altering its meaning.
c) The concert, which had been rescheduled, was sold out.
C is nonrestrictive clause. It provides information which is considered nonessential. Therefore, it can be erased without altering the meaning of the sentence.
d) The band, a hometown favorite, came back for serveral encores
D is an appositive phrase. An appositive is a noun or a noun phrase that renames another noun right beside it. They are set off with commas.
<span>This play reveals a problem of comparing life and death. The part “the body lieth in clay” messages the reader about how the soul can ‘weep’ after the death because while a person were alive it succumbed to sweetness of several sins. In the last lines, The Messenger tells us that when you are dead, all things that make us happy and shape our personality just goes away and mean nothing. </span>
C. Surroundings would be your answer. Heights can also be an answer, but they want the exact more direct answer, so C.
Hope this helps.