A perfectly elastic demand function A. shows that a consumer is willing to pay any amount for the product. B. has a marginal revenue that is always decreasing. C. is characteristic of an individual firm operating in a perfectly competitive market. D. shows that the individual firm can increase sales by lowering the price of output.

C. is characteristic of an individual firm operating in a perfectly competitive market.

Explanation:

Demand is perfectly elastic if the coefficient of elasticity is infinite. It means thay consumers would only buy at one price. Once that price changes, demand falls to zero.

A perfect competition is characterised by many buyers and sellers of homogenous goods and services. Market prices are set by the forces of demand and supply.

If a seller decides to increase the price of his good in a perfect competition, demand falls to zero and reducing price woild lead to losses.

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