What does a flashing yellow light indicate?

Answer: B — Proceed with caution

A flashing yellow light is a warning signal used to alert drivers to proceed with caution. It indicates that there may be potential hazards ahead or that the intersection requires careful attention. When encountering a flashing yellow light, drivers should reduce their speed and be prepared to yield to any pedestrians or vehicles that may be present. This signal serves as a reminder that while it is safe to continue through the area, it is crucial to stay alert and ready to respond to unforeseen conditions or obstacles. This is why proceeding with caution is the appropriate response to a flashing yellow light. Other responses, such as stopping immediately or ignoring the signal, would lead to confusion and potentially dangerous situations on the road.