He answer is C don’t ask I’m doing this at school and I remember the most useless things the answer is definitely C
Answer: C
Explanation: whom is object pronoun which applies to people, which means it describes the person on the receiving end of action that was actually performed, e.g I don't know for whom he called, from here the main clause is(I don't know) and the relative clause( whom he called). The same goes for "To whom should we send the check" to whom(main clause) while "To whom should we" (relative clause), send the check(main clause)...
C, is where it is properly used.
You didn't provide the excerpt, so i can only say what he thought about it and then you can fit it in. Emerson was a transcendentalist and believed in the good found in men and had similar thoughts. He believed, like many others, that we are innately good but the society corrupts us, because it doesn't understand true and gentle souls.