You work for a consumer organization that seeks to bring about lower prices through increased trade. As you lobby Congress for trade-friendly policies, your boss cautions you to keep in mind that "arguments in favor of free trade _____, whereas arguments against free trade _____."

a. demonstrate that there are no negative aspects of trade; focus on how trade reduces economic surplus

b. are supported by economic theory; are often political in nature

c. are accepted without much scrutiny; receive intense analysis before they are put forward

d. stem from political interests; are based on economic theory