Explanation
Why Correct: Gopala founded the Pala dynasty in 750 CE after being elected to end political chaos in Bengal, establishing a kingdom that lasted until 1174 CE.
Distractor Analysis: The Pallava dynasty ruled in South India from 275 CE to 897 CE, founded by Simhavishnu. The Pratihara (Gurjara-Pratihara) dynasty ruled North India from the 8th to 11th centuries, founded by Nagabhata I. The Chalukya dynasty had multiple branches in South India from the 6th to 12th centuries, founded by Pulakeshin I.
Takeaway: The Pala dynasty reached its peak under Dharmapala and Devapala, controlling much of northern India and patronizing Buddhism at Nalanda and Vikramashila universities.