When should headlights be used?

Answer: C — From sunset to sunrise and in inclement weather conditions

The correct answer emphasizes the importance of using headlights from sunset to sunrise and during inclement weather conditions. Headlights are a vital tool for ensuring visibility and safety on the road. At night, they illuminate the road and make your vehicle visible to others, which is crucial for avoiding accidents when natural light fades. Additionally, in adverse weather conditions such as rain, fog, snow, or heavy cloud cover, headlights improve visibility significantly by allowing both the driver and other road users to see the vehicle more clearly. Using headlights in these situations is not just about adhering to the law; it's also about promoting safe driving practices. Proper visibility can prevent accidents, as many collisions occur due to decreased visibility during such conditions. Therefore, being proactive by using headlights at the appropriate times enhances overall road safety.