Select the most appropriate option to fill in the blank.

Man ______ a strong desire to accumulate wealth.

has

The correct option to fill in the blank is has.

The sentence is a universal truth, which is always in the present tense. The subject "Man" is singular, so the right verb is "has".

The other options are incorrect.

• Have is used for plural subjects or for subjects that refer to more than one thing. For example, "The cats have a strong desire to accumulate wealth."
• Had is used for the past tense. For example, "Man had a strong desire to accumulate wealth in the past."
• Is having is used for the present continuous tense. For example, "Man is having a strong desire to accumulate wealth right now."