Which part of the sentence is a prepositional phrase

A preposition is a word that shows the relationship between a word in the sentence and the word that is the object of the preposition. You have just finished the Modifiers Module. You learned that adjectives tell which one, what kind, how much, and how many about a noun or pronoun. You learned that adverbs tell where, when, how, and to what extent about verbs, adjectives, and adverbs.