Which defect relates directly to shock absorbers?

Leaking shock absorbers are a direct defect because they are integral to the vehicle's suspension system. Shock absorbers manage the vehicle's ride quality and ensure stable handling by absorbing and dampening the energy from road bumps. If shock absorbers are leaking, it indicates that they are unable to properly perform their function, which can lead to a rough ride, increased wear on other suspension components, and potential loss of control while driving. This defect can significantly impact vehicle safety and ride quality, making it essential for drivers to inspect shock absorbers regularly for leaks or damage.

The other options relate to different systems or functions within the vehicle and do not directly affect the shock absorbers or suspension system.