Explanation:

Anandvan, a community and rehabilitation center for leprosy patients and people with disabilities, was founded by Baba Amte in 1949. Baba Amte was a renowned Indian social worker and activist known for his work with leprosy patients. Option (B) Rajiv Gandhi was a former Prime Minister of India, not associated with the founding of Anandvan. Option (C) Mahatma Gandhi was a leader of the Indian independence movement, and while he inspired many social workers, he did not found Anandvan. Option (D) Anna Hazare is a prominent Indian social activist, but he is not the founder of Anandvan. Thus, Baba Amte is the correct founder.