What highly effective form of information invokes the words of authorities speaking against their own apparent interests?

The correct answer to the following question will be "Reluctant testimony".

Explanation:

Therefore, it's the right answer.

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.