Which choice contains a prepositional phrase within a dependent clause? a) we went to the concert, so we aren't miserable. b) if we don't go to the concert, we will be miserable. c) you didn't go to the concert? you must be miserable.

The answer is B.

Explanation:

Prepositional phrase is a type of phrase where the main word is a preposition.

For example: Into the void.

It modifies a verb or a noun.

It consists of at least a preposition which is usually the first word in the phrase and the object which is usually a noun or a pronoun. So in these sentences, prepositional phrase is to the concert.  

In sentence, A phrase to the concert is a part of independent clause (We went to the concert)

In sentence B phrase to the concert is a part of a dependent clause(a sentence which can not stand alone); ( If we don't go to the concert)

In sentence C phrase to the concert is a part of independent clause ( You didn't go to the concert)

1) true

2)true

3)false

4)false

5)false

6)false

7)false

8)true

9)false

10)true

step-by-step explanation:

yes, it can be both.