Respuesta :
I would thing the answer would be pigments because the other stuff there is a lot of used for.
Answer:
The answer to the question is Brushes
Explanation:
Brushes are refereed to as devices that conduct current between a moving parts and stationary wires. they are contacts (sliding) that are used in broadcasting current from a static to a rotating part of a motor.
They can also be defined as a carbon brush that has contacts that are electrical wires that are stationary and its moving parts.