Final answer:
When the brake pressure is released from the brake pedal, the vehicle stops moving. Therefore correct answer is option 2.
Step-by-step explanation:
When the brake pressure is released from the brake pedal, the vehicle halts its motion. This occurs as the release of brake pressure permits the brake pads to disengage from the brake disc or drum, diminishing the friction between these components. Without the crucial friction supplied by the brake pads, the vehicle loses the necessary force to counteract its movement, leading to a gradual stop. This deceleration process is vital for safe and controlled driving, emphasizing the pivotal role of the brake system in ensuring the overall functionality and safety of the vehicle.
In essence, the controlled release of brake pressure serves as a pivotal mechanism for bringing the vehicle to a standstill and is integral to the dynamics of automotive braking systems.