The correct answer is (a) Tapan Sinha.
Tapan Sinha was a Bengali Indian filmmaker, screenwriter, and lyricist. He was one of the most important filmmakers of Indian cinema. He was known for his realistic and socially relevant films. He was awarded the Dadasaheb Phalke Award in 2006 for his contribution to Indian cinema.
Shyam Benegal is an Indian filmmaker, screenwriter, and documentary filmmaker. He is known for his realistic and socially relevant films. He has won several awards, including the National Film Award for Best Feature Film in Hindi for Ankur (1974) and the Dadasaheb Phalke Award in 2013.
Rishi Kapoor was an Indian actor who worked in Hindi films. He was the son of actors Raj Kapoor and Krishna Kapoor. He was known for his roles in films such as Bobby (1973), Amar Akbar Anthony (1977), and Chandni (1989). He died in 2020.
Manoj Kumar was an Indian actor, director, and producer who worked in Hindi films. He was known for his patriotic films such as Upkar (1967), Kranti (1981), and Desh Premee (1983). He died in 2019.