Final answer:
The East-West (EW) traffic light will be green when lanes C and D are occupied, when either C or D are occupied but not both, and when no vehicles are present.
Step-by-step explanation:
The correct answer is D. All of the above
According to the specifications for the traffic light, the East-West (EW) traffic light will be green when:
- Lanes C and D are occupied
- Either lane C or lane D is occupied, but not both
- No vehicles are present
These conditions are designed to efficiently control the flow of traffic and ensure the safety of drivers and pedestrians.