Exp) Option c is the correct answer.

The Non-Cooperation Movement was the first nationwide movement led by Mahatma Gandhi in 1920, urging Indians to withdraw support from British institutions and refuse cooperation with colonial rule. In September 1920, at a special session in Calcutta, the Indian National Congress (INC) approved a non-cooperation programme till the Punjab and Khilafat wrongs were removed and swaraj was established. The programme was to include:

Option I is correct: The Programme of Non-Cooperation included boycotts of law courts, government schools and colleges. It also included the boycott of foreign cloth and use of khadi instead; also practice of hand-spinning to be done.

• As a reaction to the movement, thousands of students left schools and colleges and joined 800 national schools and colleges that had come up throughout the country.
• Many leading lawyers of the country like C.R. Das, Motilal Nehru, Saifuddin Kitchlew, C. Rajagopalachari, M.R. Jayakar, Vallabhbhai Patel, Asaf Ali and T. Prakasham quit their practice.
• Heaps of foreign cloth were burnt publicly and their imports fell by half.

Option II and IV are correct: As part of the Non-Cooperation Programme, it was decided to set up national schools and colleges, establish and strengthen the panchayats for settlement of disputes, promotion of hand spinning and weaving, condemnation and renunciation of untouchability, maintenance of communal amity and strict observance of non-violence.

Option III is incorrect: The Non-Cooperation Programme involved the renunciation of government titles and honorary positions (not the retention of titles and honours without using them in public).

Source:

A Brief History of Modern India, Spectrum, Chapter –  16, Non-Cooperation Movement and Khilafat Andolan, Pg. 332 – 333

https://egyankosh.ac.in/bitstream/123456789/106107/1/Unit-12.pdf (PG. 141 – 142)