Which sentence uses two prepositional phrases?
the swarm of killer bees was reportedly migrating north.
the helicopter landed among the cars in the parking lot.
the case mystified the detectives through the long winter.
the camera monitoring the perimeter was hidden under the ivy.

The answer to your question would be that the sentence that uses two prepositional phrases is the following one: The helicopter landed among the cars in the parking lot.

Explanation:

In the sentence above, there are two prepositional phrases: Among the cars and in the parking lot. The second one, in the parking lot, modifies the first one because it delimits the location previously stated by the first prepositional phrase. The helicopter landed among the cars which were located in the parking lot.

ok i am here, i brought some cookies and some movies. do you use blu-ray cuz thats all i brought. oh, and my friend wwill be here shortly, he is going to bring some pizza too.