Final answer:
Under conditions of pure competition, no single firm can influence the market price by changing its output.
Step-by-step explanation:
A. There are differentiated products
B. The market demand curve is perfectly elastic
C. No single firm can influence the market price by changing its output
D. Firms that cannot make pure or economic profits go bankrupt
Under conditions of pure competition, no single firm can influence the market price by changing its output. This is because in a perfectly competitive market, there are many buyers and sellers, and each firm is a price taker, meaning it must accept the market price. The market demand curve is perfectly elastic, indicating that buyers are willing to buy any number of units at the market price.