Explanation:

- Kanaka Raju (Option 3) is indeed the individual recognized for his efforts in keeping the tribal dance form 'Gussadi' alive. He was awarded the Padma Shri in 2021 for his dedication to preserving this cultural heritage.

- Srimanta Sankardev (Option 1) was a prominent cultural icon from Assam known for his contribution to arts and culture during the 15th-16th centuries, but is not associated with the 'Gussadi' dance form.

- Ramsahay Pandey (Option 2) is not linked to the 'Gussadi' dance form. His contributions lie in a different cultural or artistic context.

- Pandit Birju Maharaj (Option 4) is a celebrated Kathak maestro and not associated with 'Gussadi'.