What should you be able to see if the outside flat mirrors are adjusted properly?

A 200 feet or 4 bus lengths behind the bus. Along the sides of the bus. The rear tires touching the ground.

explanation

Ensure that the mirrors are properly adjusted so you can see: (1) 200 feet or 4 bus lengths behind the bus. (2) Along the sides of the bus. (3) The rear tires touching the ground.