The correct answer is C. 1581.
Din-i-Ilahi was a new religion proclaimed by Akbar the Great Mughal Emperor in 1581. It was a syncretic religion that combined elements of Islam, Hinduism, Christianity, and Zoroastrianism. Akbar believed that Din-i-Ilahi would unite his diverse empire under a single religious banner. However, the religion was not widely accepted, and it eventually died out after Akbar’s death.
Option A is incorrect because Akbar proclaimed Din-i-Ilahi in 1581, not 1565.
Option B is incorrect because Akbar proclaimed Din-i-Ilahi in 1581, not 1575.
Option D is incorrect because Akbar proclaimed Din-i-Ilahi in 1581, not 1583.