Martin is afraid to fly. He knows his boss wants him to take a trip for the business. Martin feels miserable, because he wants to keep his job but cannot even imagine getting on a plane. The most likely diagnosis for Martin is

specific phobia, situation type                  

Explanation:

In psychology, specific phobia is described as one of the different types of anxiety disorders that produce an irrational or unreasonable fear associated with exposure to a few specific situations or objects. An individual who experiences specific phobia generally avoids or ignores contacting that situation or objects that produce fear and often depicts them.

Situational type phobia involves an individual's fear of a particular situation, for example, driving, flying, being in a closed space, etc.

As per the question, the most likely diagnosis for Martin is a specific phobia (situation type).

what's this it's not giving you what have to do.

all cities have a governor

all cities are in states or provnies then country

all cities have people

difference

some are rich

some are poor

some are average