What factors can affect a truck's stopping distance?

The stopping distance of a truck is influenced by multiple factors that directly affect its ability to slow down or come to a complete stop. The most significant elements include the truck's weight, which impacts the momentum and accordingly the distance required to stop; speed, as higher speeds result in increased stopping distance due to the greater kinetic energy that must be dissipated; road conditions, which can be wet, icy, or uneven and can drastically alter the grip between the tires and the surface, affecting braking efficiency; and brake conditions, which encompass the mechanical state of the brakes themselves, including wear and proper functioning.

Each of these factors plays a crucial role in the overall stopping distance, making option B the most accurate and comprehensive answer. Other choices, such as the color of the truck or the engine type and oil level, do not have a direct impact on the mechanical performance of the braking system or the physics involved in stopping, making them irrelevant to this particular question. Driver's reaction time is also important but is generally considered a separate component that influences the overall stopping process rather than the distance itself.