Why was the role of the people central in Gandhi's idea of non-cooperation?

Correct answer: Because if people withdrew cooperation, colonial rule could weaken

Gandhi's method rested on the idea that colonial authority was sustained not only by British officials but also by the cooperation of Indian subjects. If people refused government schools, courts, titles, imported goods, and other institutions, the administration would lose legitimacy and practical support. This mass, non-violent withdrawal could weaken the Raj. Thus A captures the principle, whereas the other options deny the central role of ordinary people.