During a vehicle inspection, what should be checked in the lighting system?

The correct choice emphasizes the importance of a comprehensive check of the vehicle's lighting system, specifically the functionality of headlights, brake lights, and turn signals. Each of these components plays a crucial role in ensuring safe vehicle operation.

Headlights are essential for visibility during nighttime driving and adverse weather conditions, while brake lights are vital for alerting other drivers when the vehicle is stopping. Turn signals are necessary for indicating to other road users the driver's intentions to change lanes or make turns.

A thorough inspection of these lights helps to enhance road safety by ensuring that all signals to other drivers are functioning correctly. Neglecting to check one or more of these critical components could create hazardous situations on the road. By including all these elements in the inspection, the driver can ensure that their vehicle is compliant with safety regulations and reduce the risk of accidents caused by unclear intentions or lack of visibility.

In contrast, focusing solely on the headlights, or checking only the dashboard lights or reflectors would leave significant gaps in safety, potentially endangering both the driver and other road users. Thus, a complete check of the lighting system is crucial for effective vehicle maintenance and operational safety.