Who was the leading proponent of ‘Vaishnavism’ in Assam?

The correct answer is Option (1) → Shankaradeva

In the late fifteenth century, Shankaradeva emerged as one of the leading proponents of Vaishnavism in Assam. His teachings, known as the Bhagavati dharma, were based on the Bhagavad Gita and the Bhagavata Purana and asked for complete surrender to Vishnu. He encouraged naam kirtan, the singing of the names of the lord in gatherings of devotees, and set up satra (monasteries) and naam ghar (prayer halls), many of which still flourish in Assam.