According to Krasner, regime can be described as explicit and implicit rules, norms, principles and decision making procedures related to a certain subject in international relations. “International regime can be defined as sets of implicit or explicit principles, norms, rules, and decision-making procedures around which actors’ expectations converge in a given area of international relations. Principles are beliefs of fact, causation, and rectitude. Norms are standards of behavior defined in terms of rights and obligations. Rules are specific prescriptions or proscriptions for action. Decision-making procedures are prevailing practices for making and implementing collective choice”. Therefore, the correct option is D.