The correct option is C. To show how dissatisfied she is with her status in life.
Mme Loisel always imagined herself as an aristocrat. Unfortunately, she was born into a lower middle class family and what's more, she got married a poor clerk. Despite all the efforts of her husband for making her happy to the point of going to bunkrupt and spend all his money on her, she always seemed unhappy since she was always needing something else.