At a flashing yellow light, what should a driver do?

Answer: C — Proceed with caution, being aware of any potential hazards

A flashing yellow light indicates that drivers should proceed with caution and be aware of any potential hazards such as crossing pedestrians or vehicles coming from other directions. It is not necessary to come to a complete stop, as the light is not red, but drivers should not speed up as that could increase the chance of an accident. Taking a detour to avoid the intersection is not necessary unless there are specific road closures or other hazards that make it unsafe to proceed through the intersection.