Option c.) is more elastic than the demand curve facing a perfectly competitive firm as the demand curve or the AR curve of a perfectly competitive firm is parallel to the horizontal axis, perfect elastic is the correct answer.
This means that the company does not control the price. The company assumes a price and sells the quantity of the product at that price. In a perfectly competitive market, a single firm faces a demand curve with infinite elasticity. In a perfectly competitive market, firms do not fix prices, but choose levels of production at which marginal costs equal market prices.
Under conditions of perfect competition, a firm can sell any quantity of goods at the prevailing price, so the firm's demand curve is perfectly elastic. So even a small price increase will result in zero demand. This suggests that the company does not control prices.
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