Vending machines, because each is just a word telling you that both were empty. Vending machines is what the whole sentence is based on.
The guard reports that Polyneices has been buried.
The answer is D. The theme of Harlem is deferring a person’s dreams
The type of pronoun used in the above sentence is a RELATIVE PRONOUN.
The relative pronoun is found in the beginning of the adjective phrase. The adjective phrase describes the noun.
In the above sentence the adjective phrase is: WHICH IS SOMETIMES CALLED THE RED PLANET.
It describes the noun MARS.
The relative pronoun used is WHICH.