What should a driver do when a yellow light is flashing at an intersection?

Answer: B — Approach cautiously and yield if necessary

When a yellow light is flashing at an intersection, the appropriate action for a driver is to approach cautiously and yield if necessary. A flashing yellow light serves as a warning indicating that the driver should be alert to potential hazards or other vehicles that might be present at the intersection. This means the driver should slow down, watch for pedestrians, and be prepared to stop if the intersection is not clear or if there are other vehicles that have the right of way. Yielding demonstrates a responsible approach to driving that prioritizes safety for all road users. Thus, taking caution and being ready to stop reflects adherence to traffic safety protocols and ensures smooth navigation through the intersection.