Which of the following should a driver regularly check to ensure vehicle safety?

The correct choice encompasses a comprehensive approach to vehicle safety, emphasizing the importance of regularly checking brakes, lights, and fluid levels. Each of these components plays a crucial role in the overall functionality and safety of the vehicle.

Brakes are essential for stopping the vehicle safely, and their performance can directly affect how effectively a driver can respond to emergencies or avoid accidents. Regular checks can identify wear and potential issues before they become critical.

Lights are crucial for visibility both for the driver and for others on the road. Functional headlights, taillights, and turn signals are vital for safe driving, particularly in low-light conditions or during inclement weather.

Fluid levels, including oil, coolant, and brake fluid, are critical for the vehicle's operation. Low levels can lead to engine problems or brake failure, compromising safety.

While checking tire pressure, vehicle cleanliness, and engine oil are important, they do not encompass the full spectrum of necessary safety checks as well as the comprehensive evaluation of brakes, lights, and fluid levels does. Regularly attending to these aspects can significantly reduce the risk of vehicle-related incidents.