Answer:
inorder to minimize the cost, the firm should use (b) more labor and less capital
Explanation:
The term “marginal productivity” refers to the extra output gained by adding one unit of labor; all other inputs are held constant. So, the technology and efficiency of the factory stays the same. Marginal productivity is the extra jeans sewn, that is output gained, by hiring an extra worker, for example.
so the company can minimize the cost of production by bring in more labour and proving less capital.