Arrange the following organization in chronological order by their year of establishment.
A. Hind Mazdoor Sabha
B. Centre of Indian Trade Unions
C. All India Trade Union Congress
D. Bharatiya Mazdoor Sangh
E. Indian National Trade Union Congress
Choose the correct answer from the options given below:

Correct option is B

The correct chronological order of establishment of the trade unions is:
1. All India Trade Union Congress (C) – 1920: The first national trade union in India, linked with the Indian National Congress and focused on labor rights.
2. Indian National Trade Union Congress (E) – 1947: Formed shortly after India’s independence and aligned with the Indian National Congress.
3. Hind Mazdoor Sabha (A) – 1948: A socialist-oriented trade union formed to address labor issues independently of political parties.
4. Bharatiya Mazdoor Sangh (D) – 1955: Established by Dattopant Thengadi, affiliated with the Rashtriya Swayamsevak Sangh (RSS).
5. Centre of Indian Trade Unions (B) – 1970: Linked with the Communist Party of India (Marxist) and aimed at representing the working class.