How should you use your headlights in foggy conditions?

Answer: C — Low beam headlights

Using low beam headlights in foggy conditions is essential for improving visibility while minimizing glare. Fog can cause high beam headlights to reflect off the water droplets, creating a blinding effect that reduces your visibility rather than enhancing it. Low beams are designed to cast light closer to the ground and provide a more effective illumination in fog, allowing you to see the road and any obstacles more clearly. In contrast, standard beams and high beams may not be as effective in fog because they can reflect back into your eyes, making it harder to see. Flashing your headlights is generally not a recommended strategy for navigating fog, as it can confuse other drivers and does not improve your ability to see the road. Therefore, using low beam headlights is the safest and most effective approach in such weather conditions.