Which system provides an increased braking effect while minimizing the driver's physical input?

The system that provides an increased braking effect while minimizing the driver's physical input is the power booster. The power booster, often referred to as a brake booster, is designed to enhance the braking force applied by the driver when they press the brake pedal. It uses vacuum pressure (in vacuum-assisted systems) or hydraulic pressure (in hydraulic boosters) to amplify the force exerted by the driver, making it easier to slow down or stop the vehicle. This means that even a gentle push on the brake pedal can result in significant braking force, thereby reducing driver fatigue and improving overall vehicle control.

The role of a power booster is crucial, especially in modern vehicles, where preserving driver comfort and enhancing safety are priorities. By minimizing the physical effort needed to achieve effective braking, it allows for quicker reactions and a more responsive driving experience. This is particularly important in emergency situations when rapid braking is essential.

The other systems listed serve different functions, such as returning components to their original positions or governing the movement of brake elements, but they do not impact the amplification of braking force in the same manner as a power booster.