In which situation should you use your headlights during the day?

Using your headlights during the day is crucial in certain situations to enhance safety and visibility. When it is foggy, headlights help illuminate the road and improve your visibility, ensuring that other drivers can see you as well. In a tunnel, especially during daylight, using headlights is important as the transition from bright outdoor light to dark tunnel conditions can reduce visibility. Additionally, whenever visibility is limited due to weather conditions like rain, snow, or haze, turning on headlights makes your vehicle more visible to others.

Given these circumstances, it's clear that using headlights during the day is not only advisable but essential in all of these scenarios for safe driving. Therefore, selecting all of the above reflects an understanding of the importance of maintaining visibility in various driving conditions.