The stopping distance can vary depending on...
A)the poor condition of the road only.
B)the poor condition of the vehicle only.
C)the poor condition of the vehicle, the driver or the road.Correct
The stopping distance is the distance travelled by the vehicle from the moment an obstacle or hazard is perceived until the vehicle comes to a complete stop. That is, the sum of the reaction distance and the braking distance.
The braking and stopping distance depends on several factors such as the condition of the vehicle, the road, weather conditions and the skill of the driver.
The reaction distance depends directly on the driver and the speed.