An output device that uses words or messages recorded on a magnetic medium to produce audio response......

An output device that uses words or messages recorded on a magnetic medium to produce audio response is

Answer: (b)
Explanation:-Voice response unit

A voice response unit (VRU) is an automated telephone answering system consisting of hardware and software that allows the caller to navigate through a series of prerecorded messages and use a menu of options through the buttons on a touch-tone telephone or through voice recognition.

By: Brijesh Kumar