What is the safe following distance during inclement weather?

Answer: B — At least 4 seconds

In inclement weather, such as rain, snow, or fog, the recommended safe following distance is at least 4 seconds. This increased distance provides a crucial buffer to accommodate for longer stopping times due to reduced traction on the road. The stopping distance for a vehicle can significantly increase in adverse weather conditions due to decreased visibility and road grip. By maintaining a following distance of 4 seconds, drivers have more time to react to sudden changes in traffic or obstacles on the road, which can help prevent collisions. This principle is based on the understanding that in poor weather conditions, it may take longer to react and come to a complete stop safely. Therefore, increasing the following distance helps ensure that you have adequate time to brake without risk of crashing into the vehicle in front of you.