Read the excerpt from act 3 of A Doll’s House. Nora: And I—how am I fitted to bring up the children? Helmer: Nora! Nora: Didn't you say so yourself a little while ago—that you dare not trust me to bring them up? Helmer: In a moment of anger! Why do you pay any heed to that? Nora: Indeed, you were perfectly right. I am not fit for the task. There is another task I must undertake first. I must try and educate myself—you are not the man to help me in that. I must do that for myself. And that is why I am going to leave you now. Helmer [springing up] : What do you say? Nora: I must stand quite alone, if I am to understand myself and everything about me. It is for that reason that I cannot remain with you any longer. Which 1800s societal expectation does the excerpt most challenge?