The passage exhibits dramatic irony through Nora's hidden dress secret, known to the audience but not to Rank.
DRAMATIC IRONY in the passage is exemplified by Nora's interaction with Rank regarding her secret dress. Nora's statement about the new dress being a secret, while Rank is unaware of it, creates dramatic irony as the audience knows the truth that Rank does not. This irony adds depth to the scene as the characters' knowledge contrasts with the audience's awareness.
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