Correct option is D
Ubhaya Bhārati was the wife of Mandana Misra (also spelled Maṇḍana Miśra).
Additional Information:
Ubhaya Bhārati was a learned scholar and an authority on Mimamsa and Vedanta philosophy.
According to traditional accounts, she acted as the referee during the famous philosophical debate between Adi Shankaracharya and Mandana Misra.
Impressed by Shankara’s knowledge, both Mandana Misra and Ubhaya Bhārati eventually became his disciples.