Question

what is an electronic system used to amplify voices through the use of microphones and speakers?
home theater
amphitheater
venue
public address system

Explanation:

A home theater is mainly for entertainment - watching movies etc. An amphitheater is an outdoor or indoor venue for performances. A venue is a general place for an event. A public - address system (PA system) uses microphones to pick up sound and speakers to amplify and project voices.

Answer:

D. public address system