How does brake fluid assist in the braking process?

Brake fluid plays a crucial role in the braking process by transmitting force from the brake pedal to the brake pads. When a driver presses the brake pedal, the force applied is transferred through the hydraulic brake system, which utilizes brake fluid to generate pressure. This pressure is directed to the brake calipers, causing them to squeeze the brake pads against the rotors, thereby slowing down or stopping the vehicle.

Understanding this function highlights the importance of proper brake fluid maintenance and the need for it to be at the correct level and free of contaminants to ensure effective braking performance. The other options do not pertain to the primary function of brake fluid in the braking system and do not reflect its purpose in brake operation.