The correct answers are A) They respected some aspects of Hinduism and B) The rulers had no desire to convert the majority of the people.
The two sentences that explain why the Delhi Sultanate did not convert the majority of Indians to Islam are, they respected some aspects of Hinduism and The rulers had no desire to convert the majority of the people.
Muslims were a minority in India in those years. People from India practiced Hinduism and the Sultanate decide to respect their beliefs in a show of tolerance. The rulers believed that if they forced people to change their culture, religion, and tradition could have been a risky move that could have produced unrest and some uprisings. They opted for peace and tolerance.