Bhasa was a celebrated classical Sanskrit playwright who is believed to have lived sometime before Kalidasa. Among the options, 'Madhyama- vyayoga' is a well-known one-act play attributed to Bhasa. His works were lost for centuries and rediscovered in 1912 by T. Ganapati Sastri in Kerala. 'Swapnavasavadattam' is another famous play attributed to him.