Answer:
D. the change in the firm's revenue as a result of employing one more unit of capital, such as a machine.
Step-by-step explanation:
Marginal Revenue Product (MRP) of a factor (here capital) is the change in firm's revenue, due to employing one additional unit of that factor.
It is calculated as : product of Marginal (additional) product from the factor (capital) , with marginal (additional) revenue of a product
MRPS (k) = MPP (k) x MR
Eg : If MPP of capital (k) = 5 , MR = 10 .
So, MRP (k) = 10 x 5 = 50