How does the plot of act 1 of henrik ibsen’s a doll’s house parallel the plots of more traditional plays?

As in most traditional plays, the plot of act 1 of A Doll’s House is designed to give the audience a short prologue showing what’s coming next.
   
As in most traditional plays, the plot of act 1 of A Doll’s House is designed to provide exposition and build up the tension of the play.
   
As in most traditional plays, the plot of act 1 of A Doll’s House is designed to bring the conflict of the play to a head to hold the audience’s attention.
   
As in most traditional plays, the plot of act 1 of A Doll’s House is designed to propel the action of the play toward its final resolution.