What does a flashing yellow light mean?

Answer: B — Proceed with caution

A flashing yellow light indicates that drivers should proceed with caution. This signal warns that the driver should remain vigilant for potential hazards or changes in the roadway situation, such as pedestrians crossing or other vehicles that may not yield. It does not require stopping but prompts the driver to be alert and ready to react. The other options suggest actions that do not align with the purpose of a flashing yellow light. Stopping and waiting for the light to turn green is associated with a red light, while speeding up or turning left without caution can lead to unsafe conditions. Thus, the best interpretation of a flashing yellow light is to continue driving but with heightened awareness and care.