Answer:
D. the price of a unit of output multiplied by the marginal product of labor
Explanation:
The formula to compute the value of the marginal product of labor is shown below:
= Price of a unit of product × marginal product of labor
= value of marginal product of labor
To find out the value of the marginal product of labor, we simply multiply the unit price of a product with the marginal product of labor so that true value can come.
Hence, all other options are wrong except D.