What is the best practice when driving in foggy conditions?

When driving in foggy conditions, using low beams and increasing your following distance is the best practice for several reasons. Fog can significantly reduce visibility, making it difficult to see both the road ahead and objects or vehicles around you.

Using low beams is crucial because high beams tend to reflect off the fog, rain, or snow, creating a glare that can further impair visibility. Low beams provide better illumination of the road immediately in front of the vehicle without causing the blinding effect that high beams can produce in such conditions.

Increasing your following distance is equally important because it gives you additional reaction time in the event that traffic slows down or comes to a stop suddenly. In fog, where visibility is reduced, stopping distances can be longer, and having a greater space between vehicles can help prevent rear-end collisions.

Driving with one hand while texting, as suggested in another choice, is dangerous in any condition due to the distraction it creates. Similarly, maintaining the same speed as in normal conditions does not account for the decreased visibility and changes in stopping ability due to fog, which can lead to accidents. Thus, option C represents the safest and most effective strategy for navigating foggy conditions.