Answer:
Decreases
Step-by-step explanation:
Monopolist is the sole seller of a good or service in a market. Eg : Indian Railways
It has a downward sloping demand curve, implying price & quantity demanded are inversely related. So, more quantity can be sold at lower prices, & higher price leads to less quantity sold.
Hence : When a monopolist increases the amount of output that it produces and sells, the price of its output Decreases.