Option d is the correct answer. Kumaradevi, the queen of Govind Chandra Gahadavala, is attributed to the construction of the Dharma-Chakra-Jaina Vihara at Sarnath. This monastery, dating approximately from the 12th century CE, is situated north of the Mulagandhakuti Vihara. Though presently in a damaged state, the Dharmachakra-Jina Vihara displays a rich architectural composition, including courtyards, gateways, and dwelling cells. It holds historical significance as a creation that bridges the late Gupta and early medieval periods, contributing to the heritage of Sarnath.