The Resolution of a literary work or drama are the final stages of a plot. It is also referred to as Denouement, French meaning "unwinding"(Dr. Wheeler's Website, Literary Terms). The Denouement is usually very brief and only takes place after all of the drama's conflicts are concluded.
In Henrik Ibsen's play A Doll's House the final conflict is resolved when Nora's husband, Torvald, reads the letter from Krogstad. Krogstad reveals that Nora forged her deceased father's signature on a loan. Because Nora acquired the loan to travel to Italy in order to rescue Torvald's failing health, Nora believes that Torvald will ultimately be grateful that Nora acquired the loan and protected him from learning how ill he was. Instead, when Torvald learns from Krogstad's letter that Nora illegally acquired a loan, he is incensed. He now sees the woman he once saw as innocent, as morally corrupt. He believes that he can no longer trust her and that she is no longer fit to raise the children.
This leads us to the play's Resolution. When Nora witnesses Torvald's reaction she understands things about him and about herself that she had failed to realize before. Nora realizes that neither Torvald nor her father had ever shown her respect, or truly respected her mind. She also realizes that she is very naive about the world and must educate herself. She agrees with Torvald that in her uneducated state she is unfit to either be a proper wife, or to raise the children. The play finally resolves when Nora walks out on Torvald and the children.