In which situation are you required to use your headlights?

The requirement to use headlights in various situations is based on safety and visibility regulations. Using headlights when it is raining helps improve your visibility and allows others to see you more clearly, which is crucial during inclement weather conditions. Additionally, the law typically mandates that headlights be used from sunset to sunrise, as reduced natural light can impair your ability to see the road and is essential for safe driving. Furthermore, whenever visibility is low—whether due to fog, heavy rain, or other adverse conditions—headlights enhance your ability to see and increase the chances of other drivers detecting your vehicle on the road.

Thus, the requirement to use headlights is comprehensive and applies not only in rain and nighttime conditions but also in any instance of low visibility, making the correct answer encompass all these situations. This approach ensures that drivers maintain a standard level of safety on the road at all times.