What should a driver do in foggy conditions?

Answer: B — Use low beam headlights and reduce speed

In foggy conditions, visibility is significantly reduced, making it essential for drivers to take specific precautions to ensure their safety and the safety of others on the road. Using low beam headlights is advisable because they provide adequate illumination without causing glare in the fog, which can occur with high beam lights. High beams reflect off the fog droplets, creating a wall of light that reduces visibility even further. Reducing speed is also crucial because it allows a driver to better react to unexpected obstacles, other vehicles, or changes in the road conditions. Slower speeds provide more time to assess the situation and respond as necessary, contributing to safer driving in challenging visibility conditions. While using hazard lights may indicate a vehicle is in trouble, they can confuse other drivers in situations where movement is still necessary, making it less effective than simply reducing speed and using appropriate headlights. Listening for traffic with windows down does not replace the necessity for visual observation and may distract the driver from focusing on the road. Therefore, modifying driving behavior by using low beam headlights and reducing speed is the safest course of action in foggy weather.