What should you do if you encounter fog or misty conditions while driving?

Answer: C — Use your low beams

When driving in fog or misty conditions, using your low beams is essential for maintaining visibility and ensuring safety. High-beam headlights can create a glare and reflect off the fog or mist, making it harder to see as the light scatters. By using low beams, you minimize this glare and improve your ability to see the road and surrounding vehicles clearly. Maintaining your speed or speeding up can increase the risk of an accident because visibility is significantly reduced in such conditions. It's important to drive cautiously, possibly reducing your speed and increasing your following distance to allow for better reaction time. Therefore, using low beams is the safest and most effective approach in foggy conditions.