Indian nationalism developed primarily due to C - inequity under British rule. The British colonial policies led to widespread economic, social, and political injustices, which fueled a sense of collective identity among Indians and a desire for self-determination.
While options A (India’s growing economic power) and B (Muslims and Hindus struggle for power) played a role in shaping the political landscape of India, the primary catalyst for the rise of nationalism was the oppressive nature of British colonialism and the inequities that arose from it. The exploitation of resources, imposition of taxes, and disregard for Indian rights and governance galvanized various segments of society to unite against colonial rule.
Thus, the core reason for the development of Indian nationalism can be primarily attributed to the inequity and exploitation experienced under British rule.