Step 1: About Krishnadevaraya.
Krishnadevaraya (1509–1529 CE) was one of the greatest rulers of the Vijayanagara Empire, belonging to the Tuluva dynasty. He was a patron of literature, art, and culture.
Step 2: His famous literary work.
Krishnadevaraya composed the celebrated Telugu epic “Amuktamalyada.” The title means “The Giver of the Worn Garland.” It describes the story of Andal, a devotee of Lord Vishnu, and also contains reflections on good governance.
Step 3: Other contributions.
Though he was also proficient in Sanskrit and Kannada, his most famous literary contribution remains in Telugu. This is why he is remembered as one of the greatest patrons of Telugu literature.
Step 4: Conclusion.
Thus, “Amuktamalyada” was written in the Telugu language.
\[
\boxed{\text{Correct Answer: Telugu}}
\]