Answer:
D. To show how they feel about where they live.
Step-by-step explanation:
Guy De Maupassant's short story "The Necklace" recounts how the selfish ambitions of a poor housewife led to the downfall of their family. Madame Matilde Loisel and her husband's unfortunate tragedy constitute the plot of the whole story.
Matilde and her husband Mr. Loisel had been invited to a fancy party which led to Mrs. Loisel demanding a new 'presentable' gown from her husband, way beyond their means. Then again, she wanted a necklace to go with the dress, so she borrowed one from Mrs. Forestier. After the party, she lost the necklace somewhere and so they had to sell off their things and take a loan to buy a new replacement for the lost necklace. Suffering for ten years just for paying back the loan, Mrs. Forestier revealed that the lost necklace was just a fake one. Thus, the Loisel's had not only lost their money and time but also their life.
The excerpt in the question is from the middle part of the story when they had just came back from the party, tired and also at the same time feeling inferior to their friends. The setting of the couple's apartment on Rue des Martyrs is significant for it shows how they (the Loisels) feel about where they live. The place is not that popular and even more shabby and poor in comparison to their friends at the party who live in luxury and big houses.