Final answer:
Technician B is correct. Only the required lights on the exterior of the truck must be working to pass the annual inspection.
Step-by-step explanation:
Technician A says that any lights on the exterior of the truck must be operable to pass the annual inspection. Technician B says that only the required lights on the exterior of the truck must be working to pass the annual inspection.
To determine who is correct, we need to understand the requirements for the annual inspection of trucks. In this case, Technician B is correct. Only the required lights on the exterior of the truck must be working to pass the annual inspection. These required lights include headlights, taillights, turn signals, and brake lights. Non-essential lights such as fog lights or auxiliary lights are not necessary to pass the inspection.