The correct answer is (a) N.M.Joshi.
The first trade union in India was the Ahmedabad Textile Labour Association (ATLA), founded in 1918 by N.M. Joshi. The ATLA was a landmark in the history of the Indian labour movement, and it played a major role in the development of trade unions in India.
B.P. Wadia was a prominent Indian industrialist and businessman. He was the founder of the Bombay Dyeing and Manufacturing Company, and he was also a member of the Indian National Congress.
V.V. Giri was an Indian trade union leader and politician. He served as the third President of India from 1969 to 1974.
S.A. Dange was an Indian communist leader. He was the founder of the Communist Party of India (Marxist).
The first trade union in India was founded in 1918 by N.M. Joshi. The ATLA was a landmark in the history of the Indian labour movement, and it played a major role in the development of trade unions in India.