Explanation:
Mathilde borrows the necklace because she wants to appear wealthy and glamorous at a ball she is attending. In Guy de Maupassant’s short story “The Necklace,” Mathilde is a middle-class woman who dreams of a life of luxury and elegance. When she is invited to a fancy ball, she borrows a diamond necklace from a wealthy friend in order to fit in with the upper-class guests. Unfortunately, she loses the necklace and spends years of her life in poverty trying to replace it.