When driving in fog, you should use:

Answer: C — Low beams

Driving with parking lights only is incorrect because these lights do not provide enough illumination in foggy conditions. High beams should not be used because they may reflect off the fog and create glare, making it harder to see. Using hazard flashers is incorrect because they are intended for emergency situations and should not be used while driving in normal conditions. Low beams are the safest option for driving in fog because they provide a better view of the road without creating glare. They also make it easier for other drivers to see your vehicle.