When driving in fog what should you do?

Answer: D — All of the above

When driving in fog, it is important to use your headlights as they help you see and be seen by other vehicles. However, using high beams can actually make visibility worse by reflecting off the fog and creating glare. Additionally, it is crucial to maintain a safe speed and distance as fog can reduce visibility and increase reaction time. Therefore, the correct action to take when driving in fog is to turn on your headlights, avoid using high beams, and maintain a safe speed and distance. This is why option D, All of the above, is the correct answer.