A spongy brake pedal usually indicates:

A. worn shoes or pads
B. defective brake booster
C. brakes out of adjustment
D. air in the system



Answer :

Final answer:

The brake pedal movement activates the hydraulic system, leading to brake pad contact with the disc through friction, causing the vehicle to stop.


Explanation:

When the brake pedal is pressed, it moves the input piston, pushing hydraulic oil into the output piston of the brake system, causing the output piston to squeeze the brake pad against the brake disc, creating friction that slows down or stops the vehicle.


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