Which of the following is a safe practice when driving in fog?

Answer: B — Reduce speed and use low beam headlights

When driving in fog, it is important to reduce speed and use low beam headlights. Fog can severely reduce visibility, often to just a few feet, making it crucial to adjust your driving practices to ensure safety. Reducing speed allows you to have better control of your vehicle and provides more time to react to any potential obstacles or changes in road conditions. Using low beam headlights is also essential because high beams can cause the light to reflect off the fog, creating a bright glare that can further impair visibility. Low beams, in contrast, direct light closer to the road and help illuminate the path without causing as much reflection. This combination of reducing speed and using the appropriate headlights enhances your ability to see and be seen by other drivers, significantly increasing safety while navigating through foggy conditions.