Economic liberals believe that individuals act in rational ways to maximize their self-interests, that when individuals act rationally, markets are created to produce goods and services that people need, and that market functions best when it is free of government interference. At the international level, international wealth is believed to be maximized with free exchange of goods and services on the basis of comparative advantage. Economic nationalism, on the other hand, refers to an ideology that favors state interventionism in the economic sphere. The nationalists believe that closing off an economy to external influences can be beneficial to growth and economic progress. Thus, economic nationalism can be defined as a mixture of trade protectionism and economic planning, with an aim to preserve national interests in the context of world markets. Economic structuralism, finally, stresses that the relationship among individuals, society, state and the market, in general, can be characterized by severe competition which is conflictual and exploitative. By extension, the relationship among states, which support owners of the means of production, is also conflictual because of inherent expansion of capitalism. It is also argued that constantly expanding markets of capitalism inevitably lead to economic crises, and dangerous speculation by holders of capital only exacerbates these crises. To eliminate economic problems and conflict inherent in the capitalist system, the capitalist system must be overthrown. The correct answer is C.