Which of the following factors contributed to the formation of the Forward Bloc by Subhas Chandra Bose in 1939?
1. Bose failed to win the confidence of Mahatma Gandhi.
2. The Congress Left was disunited and failed to support Bose.
3. The Communists did not support Bose in his endeavours.
4. The supporters of M.N. Roy and socialist leaders like Jayaprakash Narayan preferred Congress unity to supporting Bose.

Select the answer using the code given below :

Correct Option: (b) 1, 2 and 4

The correct option is (b) 1, 2 and 4. Subhas Chandra Bose resigned as Congress President in 1939 due to a lack of confidence and support from Mahatma Gandhi after the Tripuri Congress crisis. Furthermore, the Congress Socialist Party (including Jayaprakash Narayan) and M.N. Roy's Radical faction chose not to support Bose, preferring organizational unity within the Congress under Gandhi's leadership. Statement 3 is incorrect because, although communists initially maintained reservations, the principal immediate structural political isolation of Bose stemmed from the socialist and Gandhian mainstream consensus.