What should you do at a green light?

Answer: B — You may proceed if your exit is not blocked

At a green light, you should proceed if your exit is not blocked because it indicates that the traffic signal is giving you permission to move forward. Option A is incorrect because you should always be aware of pedestrians, even at a green light. Option C is incorrect because you are not limited to only turning left at a green light. Option D is incorrect because you should never speed up to clear a crossing, even if the light is green. It is important to always proceed with caution and follow traffic laws and signals.