Liberal tradition has four main assumptions: (1) pluralist image of world politics where states, non-state and transnational entities are important actors (2) economic interdependence or interconnectedness where network of states, governmental and non-governmental organizations, multinational corporations, groups and individuals turn into a global civil society that has a pacifying affect on states (3) an extensive agenda composed of all issue areas not limited with military and security issues but involving economic, social and environmental ones (4) individual level of analysis, opposed to a top-down analysis of structural realism and analysis of decision-making processes with an eye to individual, social, cultural differences. The correct answer is A.