A rearview mirror must be able to reflect a view of the road for a distance of how many feet to the rear of the vehicle?

A rearview mirror must be able to reflect a view of the road for a distance of 200 feet behind the vehicle to ensure safety and proper awareness of one's surroundings. This requirement is in place because it allows drivers to see approaching vehicles or obstacles, thereby helping them make informed decisions when changing lanes or merging. By being able to see 200 feet behind, drivers can effectively gauge the speed and distance of other vehicles, thus enhancing their ability to avoid potential collisions and navigate safely.

The distances greater than 200 feet specified in other options exceed the mandatory requirement set for rearview mirrors and may not be necessary for an average driver's field of vision under normal driving conditions.