Exp) option c is the correct answer.

Option a is incorrect. Kavyalankara is a work on poetics attributed to the scholar Bhamaha.

Option b is incorrect. Natyashastra is an ancient Indian treatise on the performing arts, attributed to Bharata Muni.

Option c is correct. Madhyama-vyayoga play is one of the thirteen plays traditionally attributed to Bhasa. It is a one-act play (vyayoga) that depicts a story from the Mahabharata, focusing on the reunion of the Pandava brothers.

Option d is incorrect. Mahabhashya is a commentary on Panini’s grammar, attributed to Patanjali.

Source:

1. Ancient and Medieval India by Poonam Dahiya – Chapter – The Guptas and The Vakatakas
2. https://www.thehindu.com/entertainment/theatre/from-the-outer-to-the-inner/article19924154.ece

Additional Sources:

1. https://archive.org/details/in.ernet.dli.2015.448260/page/n1/mode/2up