What should you do if driving in fog?

Answer: B — Use low-beam headlights and maintain a slower speed

When driving in fog, it is essential to prioritize visibility and safety. Using low-beam headlights is highly recommended because they light up the road directly in front of you without causing a glare that can reflect off the fog and impair your vision even further, as high-beam headlights tend to do. Additionally, maintaining a slower speed allows you to have more time to react to any obstacles or changes in the driving environment, which is crucial when visibility is reduced. This combination helps ensure both your safety and that of others on the road. While some choices might seem reasonable at first glance, such as using high-beam headlights or hazard lights, these actions could compromise safety. High beams can create a blinding effect in foggy conditions, making it even harder to see. Turning off your headlights is also unsafe as it would render your vehicle invisible to other drivers, significantly increasing the risk of an accident.