What does the word prosperous mean in this line from the passage?

his father was a man of business, and at one time a. a very prosperous one, married to a woman of some social pretensions.
b. socially privileged
c. well educated
d. politically dominant
e. financially successful

Prosperous as used in this sentence means:

e. financially successful

You can use the context clues "a man of business" in order to arrive with the correct phrase to complete the sentence which is related to the idea mentioned in the situation above.

What’s the excerpt?

Delegates: representatives who cast votes at a political party's national convention. binding: if a primary or caucus is “binding” that means the delegates won in that contest are legally bound to vote for a particular candidate at the parties national convention.a primary is a preliminary election used to determine a party's nominee for a specific office. the winner of the party's caucus, or primary, wins the party nomination for that state. then the delegates meet at their party's national party convention, which is a formal gathering of all party delegates from all states.