What is one of the factors that can cause skidding?

Weather is a significant factor that can cause skidding because it directly affects the road conditions. Rain, snow, ice, or even fog can reduce traction between the bus tires and the roadway, making it easier for the vehicle to lose control. For instance, wet or icy surfaces can lead to decreased friction, causing the bus to skid when sudden maneuvers or braking actions are taken. Understanding this influence allows drivers to adjust their driving behavior, such as reducing speed and increasing following distances, to maintain control under adverse conditions.

The other factors, while they may influence overall vehicle operation and safety, do not have the same direct and immediate impact on traction and control that weather conditions do. For example, fuel type affects engine performance but doesn't directly relate to skidding. Similarly, driver age and bus size can play roles in operational factors but are not primary considerations when discussing the immediate risk of skidding caused by loss of traction.