The correct answer is C. down the street.
As the name itself says, a prepositional phrase begins with a preposition. The only preposition in the sentence above is the word <em /><em>down, </em>which means that the following words are going to make a prepositional phrase with it. This prepositional phrase is telling us the location of the friend, where he or she lives.
The answer is C! last week you recommended ... ETC
Answer:“What are you reading, anyway?” she asks, walking ahead into the school. “I found a book in the library about magnolia trees, just like the ones back home in—” “It's time to focus on school now, Langston, and not trees.