The correct answer is option 4, Dharampala. Dharampala was a ruler who founded the renowned Vikramshila University for the Buddhists. This university was established during the Pala dynasty`s reign in Bengal, India. Dharampala`s initiative to establish Vikramshila University was significant in promoting Buddhism and providing a center for Buddhist learning. It became one of the most prominent centers of education in ancient India, attracting scholars and students from different regions. The university had a strong emphasis on Buddhist philosophy, logic, and Tantric practices. It played a vital role in disseminating Buddhist teachings and contributed to the growth and preservation of Buddhist scholarship. Overall, Dharampala`s efforts in establishing Vikramshila University had a lasting impact on the development of Buddhist education and culture in India.