Former nfl coach john madden had a famous fear of flying that led him to take a bus to all of the games he broadcasted. the fact that he would go to any length to avoid flying suggests that he suffered from

It suggests that he suffered from "specific phobia".

A specific phobia is any sort of uneasiness issue or disorder that adds up to an absurd or silly dread identified with introduction to particular items or circumstances. Therefore, the influenced individual has a tendency to maintain a strategic distance from contact with the items or circumstances and, in serious cases, any mention or portrayal of them.

the answer your looking for is c. : )

answer; can each be concretely realized in different ways;