Answer: C)Prepositional phrase
Explanation: Prepositional phrase is the the phrase that defines the relation between the word with noun or pronoun.The mostly used phrase are about, near, before, after, in etc. and then the word/object is used in the phrase .
Other given options are incorrect because independent clause is the clause not dependent on others, subordinating conjunction display the connection between two clauses and predicate is the part of the clause.Thus the correct option is option is option(C).