Who was the leader of Champaran Indigo movement?

The correct answer is Option 1 - Mahatma Gandhi

The leader of the Champaran Indigo movement was Mahatma Gandhi.

The Champaran Satyagraha was the first satyagraha movement led by Gandhi in British India and is considered a historically important rebellion in the Indian independence movement. It was a farmer's uprising that took place in Champaran district of Bihar in the Indian subcontinent, during the British colonial period. The farmers were protesting against having to grow indigo with barely any payment for it.