Answer:
C. Pride can make a person very unhappy.
Explanation:
Option C best restates the theme found in the passage because according to the attached image, Madame Loisel was greatly saddened because she did not have enough jewelry and ornaments to attend the ball because according to her she would look poverty-stricken.
Her husband suggested she use natural flowers instead as they are beautiful and also cheap but because of her pride, she rejected the idea because it was either expensive ornaments and jewelry or nothing.