The four factors of production are the resources of land, labor, capital and ...

A. Technology.

B. Services.

C. Work people do.

D. entrepreneurship.

The correct answer is letter D.

Explanation: Production factors are the set of elements indispensable for a productive process, be it a good or service. The theory of factors of production is the basis of economic studies.

Traditionally, economists have identified three key factors in producing a good or service: land, labor, and capital. New economic theories were subsequently added to this division.

D. entrepreneurship.