What does giving three feet of space when passing a bicycle ensure?

Providing three feet of space when passing a bicycle is essential for ensuring the cyclist's safety and stability. This distance allows the cyclist to maintain balance while being passed by a larger, faster-moving vehicle. Cyclists often have to navigate around obstacles, potholes, or other road hazards, and having that extra space minimizes the risk of rubbing against the vehicle or being knocked off balance. Furthermore, when drivers give cyclists ample room, it can also create a sense of security for the cyclist, leading to safer riding conditions overall.

While other options may have their own importance, they do not specifically address the critical need for space in maintaining a cyclist's balance during the passing maneuver.