Concept:Jayaprakash Narayan was a prominent freedom fighter and socialist leader, widely respected as the people's leader.Explanation:Jayaprakash Narayan was born in 1902 in Sitabdiara, Bihar. He was influenced by Marxist ideas in the USA and Gandhian ideology. He joined the Indian National Congress in 1929 and was imprisoned in 1932 for civil disobedience. In 1934, he formed the Congress Socialist Party with colleagues like Acharya Narendra Deva and Ram Manohar Lohia. He later left Congress and started an anti-Congress campaign, forming the Praja Socialist Party in 1952. He was posthumously awarded the Bharat Ratna in 1999. Due to his deep connection with the common people and his role as a mass leader, he earned the title "Lok Nayak", meaning leader of the people. He also played a key role in the Janata Party movement that ended Congress rule in 1977.Answer:B. Lok Nayak