Concept:A monopolist controls the entire market supply of a product and can therefore set its price.
Explanation:A monopoly exists when there is only one producer and seller of a commodity that has no close substitute.
Because the monopolist faces little or no competition, he does not simply accept the prevailing market price.
Instead, he can influence and determine the price of his goods and services in order to maximise his profit.
In contrast, a firm under perfect competition is a price taker, as it has no control over the market price.
Since the monopolist has the power to make or decide the price, he is referred to as a price maker.
Answer:A. price maker