What is a common cause of skidding?

Answer: B — Sudden or hard braking

Sudden or hard braking is a common cause of skidding because it can cause the wheels to lock up, resulting in a loss of traction with the road surface. When a driver applies the brakes abruptly, especially on slippery or wet roads, the vehicle's weight shifts forward, and if the braking force exceeds the tire's grip, the tires can slide rather than roll. This scenario is often compounded by factors such as road conditions or high speed, but the act of braking too hard or suddenly is a direct contributor to skidding. Conversely, smooth road conditions are less likely to result in skidding, as they typically provide better traction. A vehicle equipped with good tires and maintaining a safe speed are both factors that enhance stability and control, reducing the likelihood of skidding. These conditions help ensure that the tires can maintain good contact with the road, allowing for more effective braking and steering.