Answer:
C. A single firm sets the price in the market, which is taken as given by the other smaller firms
Step-by-step explanation:
An oligopoly is when there are a few large firms operating in an industry. There are significant barriers to entry or exit of firms in the industry.
An oligopoly can set price through price leadership. It is when a firm sets the price in the market, which is taken as given by the other smaller firms.
Another way an oligopoly sets prices is through collusion. It is when firms in an oligopoly come together to set prices.
I hope my answer helps you.