What does a flashing yellow light mean?

Answer: D — Proceed with caution

A flashing yellow light typically means to proceed with caution. Unlike a solid yellow light, which requires drivers to stop or slow down, a flashing yellow light only requires them to use caution and be prepared to stop if necessary. This is often seen at intersections with signals that have timed lights or sensors, indicating that the signal is about to change. Therefore, options A, B, and C are incorrect because they suggest actions that are either too cautious or too aggressive for a flashing yellow light.