-(Exhibit: Demand and Supply of Bricklayers in a Perfectly Competitive Labor Market) Assume that the market determined price of bricklayers is $100. For a profit-maximizing firm at the equilibrium level of output, the MRP_BRICKLAYERS is: A) $200. B) equal to the MFC_BRICKLAYERS. C) the supply curve for the firm hiring bricklayers. D) irrelevant, since the firm is a price taker.

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In a perfectly competitive labor market, the marginal revenue product of labor (MRP) is equal to the wage rate, which is the market-determined price of labor. Since the market-determined price of bricklayers is $100, the MRPS for a profit-maximizing firm at the equilibrium level of output will be equal to the marginal factor cost (MFC), which is also $100. This is because in perfect competition, firms are price takers both in the product and factor markets, meaning they accept the market price for both selling their output and hiring inputs like labor.