What is a monopoly

A in individual organization that has complete control over a good service or market
B a country's wealth measured by the amount of gold or silver it has
C a belief that non-Catholic should convert to Catholicism
D a country that invades another for its goods

A monopoly is an individual organization that has complete control over a good, service, or market.

A monopoly is A, an individual organization that has complete control over a good, service, or market.