The correct answer is: C. Swami Sahajanad.
Swami Sahajanad was a freedom fighter and social reformer who led the ‘Ambari Satyagraha’ in 1939 in Bihar. The Ambari Satyagraha was a protest against the British government’s salt monopoly. The protesters demanded that the government allow people to make their own salt, and they refused to pay the salt tax. The Ambari Satyagraha was successful in forcing the government to make some concessions, and it is considered to be one of the important events in the history of the Indian independence movement.
Rahul Sankrityayan was a historian, writer, and linguist. He was not involved in the Ambari Satyagraha.
Yadunandan Sharma was a politician and freedom fighter. He was not involved in the Ambari Satyagraha.
Swami Yoganand was a Hindu monk. He was not involved in the Ambari Satyagraha.