Instructions: In each of the following sets, select the letter of the sentence that uses the correct coordinating or subordinating conjunction and that is punctuated correctly. Which sentence uses the correct coordinating or subordinating conjunction and is punctuated correctly?
A) The upstairs neighbors played loud music, until the early morning or Paul slept right through the noise.
B) The upstairs neighbors played loud music until the early morning, for Paul slept right through the noise.
C) The upstairs neighbors played loud music until the early morning, but Paul slept right through the noise.

Question

Quizplus · Accepted Answer

Option A uses the coordinating conjunction "or" incorrectly. It should be used to separate two choices or alternatives. But in this sentence, the second part doesn't provide an alternative to the first part. 
Option B uses the coordinating conjunction "for" incorrectly. It should be used to give a reason for something. But in this sentence, the second part doesn't give a reason for the first part. 
Option C uses the coordinating conjunction "but" correctly. It shows a contrast between two ideas. The sentence is also punctuated correctly with a comma before "but" to separate the two independent clauses. Therefore, option C is the correct answer. Sentence C uses the correct coordinating conjunction "but" to contrast the loud music with Paul's ability to sleep through it. It is also punctuated correctly with a comma before the coordinating conjunction.

Instructions: in Each of the Following Sets, Select the Letter