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.
Give me 8 minutes to read it!!
I think both are correct in #1.
I’m not sure if there is a typo in #2 and if its supposed to be “going TO shopping malls” or just “going shopping malls”. But I think the first option, “I really dislike going (to) shopping malls” would be correct.
3. is the first one, “Could you please stop making that noise?”