The sentence that uses negatives correctly is letter C. Cameron, don't bother with the next chapter yet.
A. A. Nobody hardly never sees them here. Here, the negatives used are: ‘Nobody’ and ‘never’, two negatives are redundant.
B. She said she wasn't never baby-sitting them again. Here, the negatives used are: ‘wasn't’ and ‘never’, two negatives are redundant.
D. Doesn't the library have no prints of famous paintings? Here, the negatives used are: ‘Doesn't’ and ‘no’, two negatives are redundant.