The correct answer is D. Ketan Mehta.
Ketan Mehta is an Indian filmmaker who has directed several acclaimed films, including “Sardar” (1993), “Mangal Pandey: The Rising” (2005), and “Bhopal: A Prayer for Rain” (2014). He is known for his realistic and often controversial portrayals of Indian history and society.
“Sardar” is a biographical film about Sardar Vallabhbhai Patel, one of the founding fathers of India. The film was a critical and commercial success, and it won several awards, including the National Film Award for Best Feature Film.
Das Gupta, Benegal, and Sinha are all well-known Indian filmmakers, but they did not direct the film “Sardar.” Das Gupta directed the films “Charulata” (1964) and “Koshish” (1972). Benegal directed the films “Ankur” (1974) and “Manthan” (1976). Sinha directed the films “Aandhi” (1975) and “Mrigaya” (1976).