Can a pedestrian enter an intersection during a "flashing don't walk" signal?

The correct choice is based on the fact that a "flashing don't walk" signal serves as a clear warning to pedestrians that they should not enter the intersection. This signal indicates that the pedestrian phase is ending, and typically they should not begin crossing at this time to ensure their safety. By waiting for the pedestrian symbol to change to a "walk" signal, pedestrians can determine that it is safe to proceed.

The other scenarios present various interpretations of pedestrian behavior during a "flashing don't walk" signal, but they each misunderstand the purpose of the signal's warning: it is explicitly designed to prevent new pedestrians from entering the intersection at that time. Therefore, waiting for a clear signal before crossing is essential for ensuring safety at intersections.