Answer:
The correct answer is option B.
Step-by-step explanation:
In a competitive industry, there is a large number of buyers and sellers. There are so many consumers and producers that the economic decision of an individual has no effect on the market equilibrium. The firms are price takers and not price makers.
The equilibrium price is determined by the intersection of market demand and market supply. The output supplied by a single firm constitutes only a small portion of the market supply of output. So the supply decision by a single firm will have no effect on the market price.