The correct answer is A. Acharya Narendra Dev.
Acharya Narendra Dev was a prominent Indian independence activist, socialist leader, and scholar. He was one of the founders of the All India Socialist Party (AISP) in 1934. He was also the first president of the AISP.
The AISP was a socialist political party in India. It was founded in 1934 by Acharya Narendra Dev, Jayaprakash Narayan, and Rambriksh Benipuri. The party was a member of the Socialist International.
The AISP was dissolved in 1948. Its members joined the Praja Socialist Party (PSP).
Jayaprakash Narayan was a prominent Indian independence activist, socialist leader, and social worker. He was one of the founders of the AISP in 1934. He was also the general secretary of the AISP.
Rambriksh Benipuri was a prominent Indian independence activist, socialist leader, and writer. He was one of the founders of the AISP in 1934. He was also the treasurer of the AISP.
Karpoori Thakur was a prominent Indian politician and social worker. He was the Chief Minister of Bihar from 1969 to 1972 and from 1977 to 1979. He was also the President of the Janata Party from 1977 to 1979.
He was not a member of the AISP.