Statement I is correct: After winning the Tripuri Congress presidential election in 1939 against Gandhi's candidate (Pattabhi Sitaramayya), Bose failed to win the confidence of Mahatma Gandhi. The right-wing majority of the Congress Working Committee refused to cooperate with him, forcing his resignation.
Statement II is correct: The Congress Left was deeply disunited. While Bose hoped to unite all leftist elements under one banner, internal factionalism and differing strategic outlooks prevented them from presenting a unified front to back him against the right-wing leadership.
Statement III is not correct: The Communists (members of the Communist Party of India) initially supported Bose during the Tripuri crisis and welcomed his radical stance against British imperialism, though they later prioritized broader anti-fascist and Congress unity as World War II escalated.
Statement IV is correct: Key leftist figures, including M.N. Roy (and his followers) and Congress Socialist Party (CSP) leaders like Jayaprakash Narayan, ultimately preferred maintaining Congress organizational unity under Gandhi's leadership rather than splitting the party to support Bose's radical factional moves.
Source: https://egyankosh.ac.in/bitstream/123456789/106121/1/Unit-22.pdf
https://egyankosh.ac.in/bitstream/123456789/62832/1/Block-7.pdf
https://egyankosh.ac.in/bitstream/123456789/44329/3/Block-5.pdf
The Notification for the Civil Services Examination, 2021 was released by the Commission on March 04, 2021. The notification contains all the details related to the examination dates, number of vacancies, eligibility criteria, syllabus, application process, fee, exam centers etc. The exam is being conducted to fill in 712 vacancies as listed in the notification with 22 vacancies reserved for Persons with Benchmark Disability. The Preliminary examination will be held on October 10 2021. Candidates can visit the Commission’s website  to fill the application form. Detailed instructions for filling up online applications have been provided on the website. The application window was closed on March 24 2021. The admit cards for the Preliminary Examination were made available from September 16 2021. The admit cards can be downloaded from the Commission’s website on the above mentioned link.