Final answer:
At the end of 'Desiree's Baby' by Kate Chopin, it was 4) a letter from Madame Valmondé attesting to Désirée's lineage that was not burned in Armand's bonfire. This letter revealed the true origin of Armand's heritage.
Step-by-step explanation:
In Kate Chopin's "Desiree's Baby," many items were burned by Armand in his bonfire at the end, however, there were some things that were notably spared from the flames. Specifically:
- The corbeille that Armand had ordered for Désirée from Paris was not mentioned as being burned.
- Letters that Désirée had sent Armand before they were married were burned, as Armand conducted a thorough burning of all things related to Désirée and their child.
- The cradle and the blankets that Désirée's baby slept in were burned.
- A letter from Madame Valmondé attesting to Désirée's lineage was found, but not burned; it was actually discovered afterwards in a drawer by Armand, revealing the twist that it was he who was of mixed race, not Désirée.
From the items presented in the question, the fourth option is correct: A letter from Madame Valmondé attesting to Désirée's lineage was not burned in Armand's bonfire at the end of the story.