What does a red traffic light mean?

Answer: B — Stop and wait for the light to turn green

A red traffic light indicates that drivers must stop and wait until the light changes to green. This is crucial for ensuring safety at intersections, as it helps manage the flow of vehicles and prevents accidents. When a driver sees a red light, they are required to come to a complete stop before the intersection or marked stop line and remain stopped until the light turns green. This regulation is in place to give right-of-way to other vehicles and pedestrians who may be crossing the intersection, thus maintaining orderly traffic flow and reducing the likelihood of collisions. Recognizing and adhering to red light signals is fundamental to safe driving practices.