Theseus gives hermia three options: be put to death, marry the man he has chosen for her, or question 6 options: become a slave go live with her aunt in the country become a nun none of these

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The answer is: become a nun

The book where you can find this tale is A Midsummer's Night Dream. This was a comedy written by William Shakespeare. It tells the story of the wedding between Theseus and Hippolyta.

When giving Hermia, his daughter, those three options, Theseus compares being a nun with a sad and empty life, as women, in his worldview, are fulfilled when having husbands and sons.