Under what conditions are headlights required to be used?

Answer: B — During inclement weather and at night

Headlights are required to be used during inclement weather and at night because they are essential for ensuring visibility and safety on the road. During nighttime, headlights illuminate the roadway, allowing drivers to see obstacles, signs, and other vehicles. Similarly, in conditions such as rain, fog, snow, or sleet, visibility can become significantly reduced. Using headlights in these scenarios not only helps the driver see better but also makes the vehicle more visible to other road users, contributing to overall road safety. While there are other stipulations regarding when headlights might be required, such as specific visibility thresholds or operating conditions on highways, the combination of using headlights during adverse weather conditions and at night is a comprehensive guideline that prioritizes the safety of all road users.