Correct option is D
Oligopsony is derived from Greek words:
"Oligo" means few
"Opsonia" means purchase
It is commonly found in agriculture and labor markets, where a small number of large firms (buyers) control the demand.
Monopsony market:
A market with only one buyer and multiple sellers.
Example: A government defense contract where only one agency buys weapons from different manufacturers.
Oligopoly market:
A market with few sellers and many buyers.
Example: Automobile and telecom industries.
Monopolistic market:
A market with many sellers, but each sells a differentiated product.
Example: The fast-food industry, where many brands compete with similar but unique products.