Answer: Because it supplies a higher quantity of output than a single price monopolist.
Step-by-step explanation:
In monopoly, there is a single producer or seller of a product and the seller is called the monopolist. A monopolist has control over the price and demand, and supply decisions, therefore setting price in a way that maximum profit can be gotten.
When the monopolist charges different prices from the consumers for the same product, it is called price discrimination. A price discrimination monopolist can be more efficient and profitable because a higher quantity of output is supplied than the monopolist who offers a single price.