Correct option is D
The Trayipurusha temple at Salotgi was a renowned center of higher education during ancient and medieval times. Salotgi, located in modern-day Karnataka, was an important educational hub where Vedic studies, philosophy, and other subjects were taught. The temple and surrounding institutions attracted scholars from various regions.
The Dasavatara temple at Deogarh (Uttar Pradesh) is a beautiful example of early Gupta architecture, dedicated to Vishnu. While it is an important religious site, it was not a center of higher education.
The Sas-bahu temples (Sahasrabahu) at Gwalior are dedicated to Vishnu and known for their intricate carvings, but they are not associated with higher education.
The Shore temple at Mamallapuram, built by the Pallavas, is famous for its architectural beauty and sculptures, but it is primarily a religious site, not a center for higher education.