Teaching pilots how to fly.
How does the author develop the idea that flying takes skill?
A) By describing why he became a flight instructor, the author highlights his interest in helping others to master the rules of flight.
B) By mentioning that he has flown from coast to coast, the author highlights the ability required to fly long distances.
C) By stating how he wasn't eligible to fly for the military, the author highlights that good eyesight is a requirement in flying a plane.
D) By specifying that pilots must take classes and practice flying under various conditions, the author highlights the expertise required to fly a plane.