Question

read the excerpt from act 2 of a dolls house. nora: quickly he mustnt get the letter. tear it up. i will find some means of getting money. krogstad: excuse me, mrs. helmer, but i think i told you just now— nora: i am not speaking of what i owe you. tell me what sum you are asking my husband for, and i will get the money. krogstad: i am not asking your husband for a penny. nora: what do you want, then? krogstad: i will tell you. i want to rehabilitate myself, mrs. helmer; i want to get on; and in that your husband must help me. for the last year and a half i have not had a hand in anything dishonourable, and all that time i have been struggling in most restricted circumstances. i was... what conflict does krogstad introduce? krogstad tells nora that he has written a letter telling helmer about her affair with the doctor. krogstad refuses to forgive helmer unless nora finds a way to come up with more money. krogstad tries to blackmail nora into getting helmer to keep him at the bank by exposing her forgery. krogstad plans to take helmers job managing the bank and ruin noras reputation while doing so.

Explanation:

From the excerpt, Krogstad does not ask for money from Nora or her husband. Instead, he wants Nora to get Helmer to keep him at the bank, and the core leverage he holds is Nora's forgery (a key plot point in A Doll's House where Nora forged her father's signature for a loan), which he can expose to blackmail her. The other options do not match the text: there is no mention of an affair, money demands from Helmer, or Krogstad taking Helmer's job directly.

Answer:

Krogstad tries to blackmail Nora into getting Helmer to keep him at the bank by exposing her forgery.