Which of the following is an investment in human capital?
a. learning projects
b. work experiences
c. internships
d. education e)all of the above

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.

answer; ancient times;

answer; many cognitive abilities emerge earlier in children than piaget though;