Explanation:

The foundation of INTUC on 3 May 1947 just 3 months before India attained independence.

Acharya JB Kripalani, who was then President of the Indian National Congress inaugurated the Founding conference of INTUC. Among the distinguished leaders who attended the opening session were Pandit Jawaharlal Nehru, Shankarrao Deo, Jagjivan Ram, B. G. Kher, OP Mehtab, Aruna Asaf Ali, Ram Manohar Lohia, Ashoka Mehta, Ramchandra Sakharam Ruikar, Maniben Patel and other prominent trade unionists.[3]

Under the guidance of Mahatma Gandhi, the founding fathers in their wisdom preferred to let the INTUC have an independent identity with its own constitution, while at the same time functioning as an arm of the Congress.