________________ refers to a device for converting signals into audio or visual form.

• A. Transmitter
• B. Receiver
• C. Amplifier
• D. Decoder

Answer: (B)

Converting signals into audio or visual form is the job of the receiver. It is the receiving end that takes in the incoming signal, demodulates or decodes it as needed, and outputs the tangible result you can hear or see—sound through a speaker or video on a display. The transmitter is the source that sends signals out, not the one that creates the audible or visible output. An amplifier simply boosts signal strength, which helps the output but isn’t about turning signals into audio or visuals. A decoder handles translating encoded data, but producing the actual audio or video output is the receiver’s role within the system.