Concept:A perfect market is one where many independent buyers and sellers trade identical goods and no single participant can set the price.
Explanation:In a perfect, or perfectly competitive, market, there are many sellers and many buyers.
Each seller supplies only a tiny fraction of the total output.
Because no single buyer or seller controls enough of the market, none can influence the ruling market price.
All firms sell homogeneous products, so buyers will not pay more than the market price.
The price is therefore determined by the forces of demand and supply in the whole market.
An imperfect market, by contrast, allows some degree of price influence.
A stock exchange market or ordinary exchange market may have limited operators or differentiated products.
Thus, the structure that fits the description is the perfect market.
Answer:C. perfect market