What type of lighting is commonly found on the exterior of a school bus?

Answer: C — Amber warning lights, red stop lights, and headlights

The correct choice is C, which identifies the typical lighting configuration on the exterior of a school bus. Specifically, school buses are equipped with amber warning lights, red stop lights, and headlights to ensure visibility and safety while operating in the vicinity of children and school-related activities. Amber warning lights are activated when the bus is preparing to stop, signaling to other drivers to slow down and be cautious. Once the bus comes to a complete stop and the stop arm extends, the red stop lights illuminate, indicating that it is not safe for children to cross the street. Having both amber and red lights provides a clear and progressive warning system for drivers. Headlights are standard on all vehicles to provide necessary illumination during low visibility conditions. The combination of these lighting features is essential for the safe operation of school buses, helping to protect the children who enter and exit the vehicle. In contrast, the other options do not accurately reflect the complete and mandatory lighting system used on school buses, which is designed specifically for maximum safety during school transport.