The correct answer is: a) Theatre.
The Ratan Thiyam Lifetime Achievement Award is given to an individual who has made a significant contribution to the field of theatre. The award is named after Ratan Thiyam, a Manipuri theatre director, playwright, and actor. Thiyam is the founder of the Imphal-based theatre group, Chorus Repertory Theatre. He has been awarded the Padma Shri, the Padma Bhushan, and the Sangeet Natak Akademi Award.
The other options are incorrect. Film is a medium of visual communication that uses moving images to tell stories or record events. Sports is an activity involving physical exertion and skill in which an individual or team competes against another or others for entertainment. Literature is the art of writing.