Which of the following is a defect found in a suspension system?

Leaking shock absorbers are indeed a defect found in a suspension system because they play a critical role in maintaining vehicle stability and ride quality. The suspension system is designed to absorb shocks from the road and keep the tires in contact with the ground. Shock absorbers help control the impact and rebound movement of the vehicle's springs, thus ensuring that the vehicle handles properly while driving.

When shock absorbers leak, they lose their effectiveness. This can lead to a rough ride, increased body roll during turns, and longer stopping distances. It can also cause premature wear on other components of the suspension system or tires. Therefore, identifying leaking shock absorbers is essential for maintaining a safe and comfortable driving experience.

The other choices refer to defects in different vehicle systems: cracked brake pads pertain to the braking system, broken headlights involve the vehicle's lighting system, and worn tires relate to the tire condition rather than suspension.