Birsa Munda is an important icon of.

The correct answer is Option (3) → Tribal Movement

Option (3) Tribal Movement — Correct. The social movement for Jharkhand, a tribal movement with a century of resistance behind it, had a charismatic leader in Birsa Munda, an adivasi who led a major uprising against the British. After his death Birsa became an important icon of the movement, kept alive in stories, songs and writing.