Riddle

You heard me before, and then again. Afterward I die, until you call me again. What am I?

Choose an answer

A.A whisper
B.Silence
C.A song
D.Echo
Hint: It's a word with 4 letters, starting with "E".

Answer

Echo

Why this is the answer

An echo repeats a sound and then fades away completely, only returning again when a new sound calls it back.

This riddle is filed under "What Am I?" Riddles and rated Medium.