Consider the following Bhakti Saints : 1. Dadu Dayal 2. Guru Nanak 3. Tyagaraja Who among the above was/were preaching when the Lodi dynasty fell and Babur took over?

1. The key event referred to is the First Battle of Panipat in 1526, where Babur defeated Ibrahim Lodi, marking the fall of the Lodi dynasty and the beginning of Mughal rule in India. 2. We need to determine which of the mentioned Bhakti Saints were alive and actively preaching around 1526. 3. Guru Nanak (2): His lifespan is widely accepted as 1469–1539. Therefore, he was alive and actively preaching during the time Babur took over in 1526. Historical accounts, including the Baburvani hymns, suggest he witnessed events related to Babur's invasion. 4. Dadu Dayal (1): His lifespan is generally considered to be 1544–1603. He was born after the Lodi dynasty had already fallen and Mughal rule was established. 5. Tyagaraja (3): He was a prominent composer of Carnatic music and a devotee of Lord Rama, living much later, from 1767–1847. 6. Therefore, only Guru Nanak was preaching during the specified historical period.