Question

the function of brake fluid in an automobile is to
a activate the brakes.
b lubricate the brakes.
c cool the brake pads.
d lubricate the brake pedal.
click the button or type the letter next to your answer.

Explanation:

Brake fluid in an automobile is used to transmit force to activate the brakes (hydraulic braking system). Lubrication is not its main function (eliminating B and D), and cooling brake pads is not its role (eliminating C).

Answer:

A. activate the brakes.