Option c is the correct answer. Balaputradeva, the ruler of Suvarnabhumi, was the maharaja of Srivijaya in the 9th century CE and a part of the Sailendra dynasty. He founded a Buddhist monastery at Nalanda, which is mentioned in the Nalanda inscription. He displayed his commitment to Buddhism by requesting Devapala, through his envoy, for the allocation of five villages to support the upkeep of this monastery. Balaputradeva's efforts signify his engagement in promoting Buddhism and fostering cultural ties, as seen in his diplomatic appeal to Devapala for the monastery's sustenance.