Increased speeds affect which of the following elements of driving?

Increased speeds have a comprehensive effect on multiple aspects of driving, specifically the operator, the vehicle, and the road surface. As a driver accelerates, they face heightened responsibilities regarding their reaction times and decision-making abilities. At higher speeds, the operator must process information more quickly and react to hazards more swiftly, which demands increased concentration and skill.

The vehicle itself is also significantly impacted by higher speeds. Factors such as stability, handling, braking distance, and overall vehicle performance become more critical as speed increases. A vehicle's dynamics change, meaning that it may require longer distances to stop and may be more sensitive to steering adjustments at high velocities.

Additionally, the road surface plays a critical role in driving at increased speeds. The condition of the road (e.g., the presence of potholes, gravel, or wet surfaces) can affect traction and control. Higher speeds amplify the consequences of road irregularities, potentially increasing the likelihood of losing control.

Together, these three elements—operator, vehicle, and road surface—interact in ways that are fundamentally altered by increased speeds, making option B the most comprehensive and accurate answer.