Answer: combine, control, and route audio signals from inputs to outputs
Explanation:
A audio mixer is refered to as the sound mixer or the mixing console and it's an electronic device that's used for mixing, and combining several audio signals and sounds.
The input to the console is the microphone. The audio mixer can also be used in controlling digital or analog signals. These are then summed up in producing output signals.
Therefore, the function of the audio mixer is to combine, control, and route audio signals from inputs to outputs.
The small gear that is driven by the motor shaft of a rotisserie is called a Pinion gear. A pinion gear is a type of linear actuator and comes with the rack gear. The pinion gear is the small circle running through the gear rack. It is like the wheels of the train running through the rail. So the answer to your question is letter D.
