When the United States Supreme Court formally recognized its role in achieving equality for all Americans during the civil rights movement, it was following a philosophy.

legal realism

Explanation:

When the United States Supreme Court formally recognized its role in achieving equality for all Americans during the civil rights movement, it was following a legal realism philosophy.  

Legal realism philosophy has to do with the concept that legal rules, decisions and laws are to favor and benefit the larger society and public policy. Due to the increased civil rights clamor, the Supreme Court had to change its stands and make rules and give verdicts which favored the majority.  

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.

the answer is:

c. economic output