How should you react to a traffic signal that is both red and green?

Answer: D — Obey the red light; the red light takes precedence

When encountering a traffic signal that displays both red and green lights, it is important to prioritize safety and follow the established rules of the road. In this scenario, the red light indicates that you must stop, as it signals that vehicles are not permitted to proceed through the intersection. This rule is fundamental to preventing accidents and ensuring that all road users can navigate safely. The precedence of the red light is crucial because it is meant to control the flow of traffic and protect pedestrians as well. A green light typically allows for movement, but when it is accompanied by a red light, the red signal's instruction overrides any movement suggested by the green. Therefore, the correct action is to obey the red light and come to a complete stop until the signal changes, ensuring that you are following the law and maintaining road safety.