what system uses friction and heat to stop a moving \na) brakes\nb) transmission\nc) suspension\nd) driveline

Answer

Brief Explanations:

Brakes work by creating friction between brake - pads and rotors or drums. This friction converts the kinetic energy of the moving vehicle into heat, slowing down or stopping the vehicle. Transmission transfers power, suspension provides a smooth ride, and driveline transmits power from the engine to the wheels.

Answer:

A. Brakes