Answer:
A single firm produces a product with no close substitutes and control over the market price.
Explanation:
Monopoly is the uncontested exploitation of a business or industry, by virtue of a privilege. It is the possession or the right in an exclusive character. To have the monopoly is to possess or to enjoy the exploitation in an abusive way, is to sell a product or service without competitor, by high prices. From the Greek monos, which means "one" and "polein" meaning "to sell".
