What must you do when you see a flashing yellow light?

Answer: B — Proceed with caution and be prepared to stop

When you see a flashing yellow light, the correct response is to proceed with caution and be prepared to stop. This signals to drivers that they need to be alert as they approach the intersection or area where the light is located. Unlike a solid yellow light, which indicates that a red light is imminent, a flashing yellow light does not require drivers to stop but encourages them to slow down and be attentive to any potential hazards. This alertness is crucial, as there may be pedestrians crossing, vehicles yielding, or other unexpected situations that could arise. By being prepared to stop, you ensure the safety of yourself and others on the road while navigating through the area marked by the flashing light. Disregarding the flashing yellow light could lead to dangerous situations, as failing to reduce speed and proceed cautiously might cause accidents. This makes option B the most appropriate choice for situations involving a flashing yellow light.