Nora: Oh, you wouldn’t understand. Go in to them, I will come in a moment. [MRS. LINDE goes into the dining-room. NORA stands still for a little while, as if to compose herself. Then she looks at her watch.] Five o’clock. Seven hours until midnight; and then four-and-twenty hours until the next midnight. Then the Tarantella will be over. Twenty-four and seven? Thirty-one hours to live. Helmer: [from the doorway on the right] Where's my little skylark?

Nora: [going to him with her arms outstretched] Here she is!

Which statement best explains how Ibsen creates suspense in this passage?

He uses a flashback to show the audience a possible outcome for one of the play’s central conflicts.
He uses foreshadowing to tell the audience how the conflicts in the play will ultimately be resolved.
He uses dramatic irony by sharing Nora’s thoughts with the audience, revealing that Torvald will help her.
He uses dramatic irony because the audience knows that Nora is planning to kill herself, while Torvald does not.