Sentence Correction (SC) | Re: The commission acknowledged that no amount of money or staff

C is wrong for two reasons. First, we don't want to say "numbers." We can have a large number of people or a small number of people, but it's still just one number. Second, "number(s)" doesn't imply a large amount (it could be any number), so it doesn't fit with the idea of the sentence, which is that even large efforts/expenditures will not achieve what we want. We can fix both problems with C by saying "a large number of staff members."

D isn't saying that the individual
...

---