Answer:
The volume is not turned on.
Step-by-step explanation:
A speaker can be defined as an electronic output device that is typically used for the conversion of an electromagnetic wave to sound wave.
Basically, this conversion is done through the help of a hardware electronic component known as transducers.
The main purpose of a speaker is to produce an audio output and as such avail the computer users an ability to hear or listen to sounds.
Hence, if there is no sound coming from the speakers; the cause of this problem could be that, the volume is not turned on because the volume determines the level of sound (output) from the speakers. Thus, if it is turned off (low), there won't be any sound from the speakers.