Which of the following is a potential effect of using worn brake pads?

Using worn brake pads can lead to damage to the rotors, which is the correct choice. Brake pads are designed to create friction against the rotors, allowing the vehicle to slow down or come to a complete stop. When the brake pads wear down, they become less effective at providing this friction. As a result, the metal backing of the brake pads can make direct contact with the rotor surface. This contact can cause grooves, scoring, and warping of the rotors, leading to costly repairs and potential safety issues.

Improved fuel efficiency, enhanced engine performance, and increased tire pressure are not associated with worn brake pads. Worn pads will not improve fuel efficiency, as the braking system will require more effort to stop the vehicle, potentially leading to increased fuel consumption. Additionally, engine performance is unrelated to the condition of brake pads, as the engine operates independently of the braking system. Lastly, tire pressure is a separate concern and is not influenced by the wear of brake pads. Understanding the impact of worn brake pads highlights the importance of regular maintenance and timely replacement to ensure vehicle safety and performance.