What should you check during a pre-trip inspection?

During a pre-trip inspection, it is essential to check various critical components of the vehicle to ensure it is safe for operation. The correct answer emphasizes inspecting tires, lights, brakes, and fluid levels, which are fundamental aspects of vehicle safety and performance.

Checking the tires ensures they are properly inflated and free of significant wear or damage, which is vital for maintaining traction on the road. The lights must be functional to ensure visibility and communication with other drivers. A thorough inspection of the brakes is crucial, as they are one of the primary safety systems that allow for safe stopping of the vehicle. Additionally, checking fluid levels, including oil, coolant, and brake fluid, helps ascertain that the vehicle is operating efficiently and can prevent mechanical failures during operation.

The other options focus on areas that do not impact the operational safety of the vehicle. For instance, checking only fuel levels does not provide a comprehensive view of the vehicle's readiness for the journey. Inspecting passengers' belongings in the cabin or the radio and entertainment system is irrelevant to safety and vehicle performance, which are the main priorities of a pre-trip inspection.