Answer:
Oligipoly
Step-by-step explanation:
Oligopoly market is characterised by:
1. Few large firms
2. Firms set their prices together which is known as a cartel or through price leadership where a firm sets the market price.
3. Firms engage in advertisement.
4. Firms avoid price competition.
An example of an oligopoly is OPEC. OPEC is a cartel.