If abnormality is defined as behavior that causes personal discomfort or harms others, which of the following people is most likely to need treatment?

a. An executive is afraid to accept a promotion because it would require moving from his ground floor office to the top floor of a tall office building.

b. A woman decides to quit her job and chooses to live on the street in order to live a “simpler life.”

c. A man believes that friendly spacemen visit his house every Thursday.

d. A photographer lives with 19 cats in a small apartment, lovingly caring for them.