The correct answer is: Baba Ramchandra.
Baba Ramchandra was a freedom fighter and social reformer who was born in 1889 in the village of Pipra in Bihar. He was a disciple of Mahatma Gandhi and played a key role in the Champaran Satyagraha, a movement against the exploitation of peasants by European indigo planters.
Rajkumar Shukla was a freedom fighter and politician who was born in 1884 in the village of Baikunthpur in Bihar. He was a member of the Indian National Congress and served as the Chief Minister of Bihar from 1937 to 1939.
Sahajananda Saraswati was a social reformer and educationist who was born in 1863 in the village of Deoghar in Bihar. He was the founder of the Bihar Vidyapeeth, a university in Patna.
Shri Krishna Sinha was a freedom fighter and politician who was born in 1887 in the village of Arrah in Bihar. He was the first Chief Minister of Bihar from 1946 to 1961.
Baba Ramchandra was the one who attracted Gandhiji’s attention towards exploitation of peasants by European indigo planters in Bihar. He was a freedom fighter and social reformer who played a key role in the Champaran Satyagraha.