Land, labor, capital, and entrepreneurship are the a) basis of employment. b) results of production. c) factors of production. d) results of supply and demand.

C)factors of production.

Explanation:

Factors of production, is the correct answer. Land, labor, capital, and entrepreneurs are the factors necessary to produce any good or service in an economy.

because he had a big bear belly

i believe the answer is:   psychological  experiment

in this experiment, wilhelm wundt became the first person that implement scientific method in analyzing the pyschological phenomenon.

due to this result, wilhelm wundt also able to make psychology to be acknowledged as a separate scientific field from biology.