Isoquants are downward sloping because
A) as more units of an input are used to produce a product, total cost increases.
B) as more units of an input are used to produce a product, the firm's marginal productivity increases.
C) if more of one input is used, then less of the other input must be used to keep output constant.
D) Both B and C

Question

Quizplus · Accepted Answer

Isoquants are downward sloping because they represent combinations of inputs that produce the same level of output. If more of one input is used, less of the other is needed to maintain the same output level, reflecting the principle of substitution.

Isoquants Are Downward Sloping Because