Why Correct: Dharmapala, the second Pala emperor who ruled from c. 783–820 CE, established the Vikramashila Vihara as a major Buddhist monastic and educational center in present-day Bihar.
Distractor Analysis: Mahipala I was a later Pala ruler who revived the dynasty in the 10th century. Devapala was Dharmapala's son and successor who expanded the empire. Surapala was another Pala ruler, but not associated with Vikramashila's foundation.
Takeaway: Dharmapala also founded the Somapura Mahavihara at Paharpur, another UNESCO World Heritage site, making him a key patron of Buddhist institutional development.