The capacity of private citizens to create new businesses independent of government direction or intervention.

The answer is "Entrepreneurship"

Entrepreneurship is the capacity and willingness of private citizens to create, develop, organize and manage a business venture, taking certain economic risks, in order to produce a profit. This is possible in a democratic and free society because entrepreneurs have the right of economic freedom, to create and to challenge, through their business, existing economic, social, and political structures without government direction or intervention; they only have to abide by the general regulation of business as established in law.

d is the correct answer.

b is incorrect because it makes food by itself

c is incorrect because us humans don't know how to produce their own food using the sun like plants.

a is incorrect because consumers can depend on carnivores for eating food for consumers to eat the dead organism. same thing with omnivores.