Human capital is Select one: a. the same thing as technological knowledge. b. the same thing as labor. c. the tools and equipment operated by humans. d. knowledge and skills that workers have acquired.

The correct answer is letter "D": knowledge and skills that workers have acquired.

Explanation:

Human Capital is all the creative skills and expertise embodied in a company's employees, skills which brings economic value for the company. The most efficient way of producing goods and services is to know the "how to." Human capital can be used more efficiently like any other kind of capital and this leads to an improvement in the quality and quantity of production.