What is the purpose of the witches' scenes in macbeth? a. to show that the characters of the play are being tricked and controlled by outside forces b. to create tension by offering audiences just enough information about future events to keep them interested c. to provide comic relief in a play that would otherwise be dark, gloomy, and possibly upsetting to the audience d. to give side narration of complicated events in the play so that the audience doesn't get confused