What is one key factor that affects stopping distance?

Answer: C — The condition of the road and tires

One key factor that significantly affects stopping distance is the condition of the road and tires. When the road surface is wet, icy, or uneven, it can greatly increase the distance required to come to a complete stop. Similarly, if the tires are worn, under-inflated, or not designed for the current road conditions, the friction between the tires and the road can be compromised, making it more difficult for the vehicle to stop quickly. Proper tire maintenance and awareness of road conditions are essential for ensuring safe stopping distances. The interaction between these two factors—road surface and tire condition—directly influences how effectively a vehicle can slow down or stop.