States spend the least amount of revenue on .
a.
highways.
b.
education.
c.
intergovernmental expenditures.
d.
public welfare.

answer; by working independently, the states have a high likelihood of developing innovative solutions that can be employed in other states;

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.

your question is incomplete

explanation:

the answer is true!