The correct answer is "He spreads the final word to the animals that Nagaina is dead".
Explanation:
In the short story "Rikki-Tikki-Tavi" in the anthology of "The Jungle Book" by Rudyard Kipling, Coppersmith is a bird that plays the role of a bell that tells everyone in town when something happens. In the story, when Nag and Nagaina are dead at the fangs of Rikki-tikki, he sings the news to all the animals.
