Answer:
A. Malvolio has gone mad.
Explanation:
Malvolio is the steward of Lady Olivia in William Shakespeare's comedy "Twelfth Night". He is a character of no humor, would do anything to ensure his rising status in the society and wanted only this. His serious and one minded aim of achieving acclaim is what made him an easy target for the prank.
During the Christmas feast, a prank was played on him. He got a letter claiming that his mistress, Lady Olivia was secretly in love with him. So, she wants him to dress in yellow stockings and cross garters and smile. Believing the letter to be true, and imagining how obeying the letter will immediately raise his position if he gets to marry her, he did what was exactly mentioned. But on the venue, when he went to meet Lady Olivia, she found his dressing weird and thought he had gone mad. Moreover, she hates the color yellow, and her brother had recently died, leaving her angry at seeing Malvolio constantly smiling at her. So, she ordered him to be taken and imprisoned.
