How many prepositional phrases are in the following sentence? I was able to fix the problem with my dryer today, which saved me a $150 service call.
a. One: "to fix"
C. One: "with my dryer"
b. Two: "to fix" and "with my dryer"
d. none

C. One: "with my dryer"

Explanation:

Prepositional phrase is a group of words that starts with a preposition, and, besides it, contains a noun or a pronoun (at three o'clock, on the table, with all my heart, under the bed etc.)

Now, "with my dryer" seems like a no-brainer, the only question is "Is it the only prepositional phrase?"

Some might identify "to fix" as the other phrase. However, although it starts with "to" it doesn't function as a preposition here, it only serves to build an infinitive. Additionally, "fix" is a verb, not a noun nor a pronoun, so this can't be regarded as prepositional phrase by any means.

1.the hosts on two opposing mountains stood,  

2.thick as the foliage of the waving wood;  

3.between them an extensive valley lay,  

4.o'er which the gleaming armour pour'd the day,  

5.when from the camp of the philistine foes,

6. dreadful to view, a mighty warrior rose; in the dire deeds of bleeding battle skill'd,