Option a is the correct answer. Rajdharma is a Sanskrit term that means "the duty of a king. It includes subjects' welfare, security, justice, and maintaining the social order. The one who established 'Rajdharma' based on the principles of forbearance, freedom, and compassion was Ashoka. After a period of conquest and warfare, Ashoka, the Mauryan emperor, embraced Buddhism and adopted a policy of non-violence and benevolence. His policy aimed at ruling with a sense of moral responsibility towards his subjects, promoting religious tolerance, and ensuring the welfare of his people through compassion and equitable governance.