Answer:
Krogstad tries to Blackmail Nora into getting Helmer to keep him at the bank by exposing her forgery.
The soothsayer is not sure if Caesar will be harmed or not.
I hope this helps!
'Selling one's soul' means to do anything, no matter how immoral, to achieve an objective. It basically means not to do anything to reckless for a few points on a grade. For example cheating.
