Answer:
A is the correct answer.
Explanation:
In the modern economy, there are different industries and for economic analysis, the industries are divided into four models based on the amount of competition in the markets, the four types are Pure competition, oligopoly, monopolistic competition, and pure monopoly. Only in the pure competition market, the competition is very high. Although there are no perfectly competitive markets in the real world, the markets related to farming, gold, and currency can be labeled as the pure competition market.