Answer:
C
Explanation:
A. Because of is a prepositional phrase since the word because is a subordinating conjunction. However, when combined with of, it becomes a preposition. It works as an adverbial prepositional phrase when used with other words to modify a verb.
B. Due to is an adjective, which describes or modifies a noun. When combined with the rest of the sentence, it functions as an adjectival prepositional phrase. You can’t use due to in the same way as because of.
EX. The car accident was due to a distracted driver. (modifies car accident)
C and D. Despite and in spite of are a preposition and a three-word prepositional phrase that have the same meaning. We use them to show the contrast between something that's expected and a different outcome.
