During vehicle inspections, which of the following should be checked?

The correct answer encompasses a comprehensive safety check that is crucial for maintaining vehicle functionality and ensuring driver and passenger safety. By checking the lights, brakes, tires, belts, and hoses, a thorough vehicle inspection is conducted which addresses the most critical components that could affect the vehicle's performance and operational safety on the road.

Lights are essential for visibility and signaling to others, brakes are vital for safely stopping the vehicle, and tires are the primary point of contact with the road, impacting traction and handling. Belts and hoses, on the other hand, are important for the engine’s function and overall vehicle stability, as they can affect performance and lead to significant mechanical issues if not properly maintained.

This option stands out as it reflects a well-rounded approach to vehicle health, whereas the other options are limited in scope and do not capture the full array of vehicle components that are essential for a successful and safe inspection.