The law of diminishing marginal returns is first evident in the following table

Question

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The law of diminishing marginal returns states that as additional units of a variable input (such as labor) are added to fixed inputs (such as capital), the marginal product of the variable input eventually decreases. In this table, the marginal product of labor (the additional units of output produced by each additional unit of labor) increases initially as more workers are added, but then begins to decrease after the third unit of labor is added. Therefore, C is the best choice as it represents the point where the law of diminishing marginal returns first becomes evident.

The Law of Diminishing Marginal Returns Is First Evident in the Following