Why is a system of currency exchange necessary for international trade? a) nearly all world currencies are worthless on the world market. b) those buying goods on the world market only accept payment in gold and silver. c) most goods bought on the international market must be bought and paid for using united states dollars only. d) there must be a way to pay for goods purchased from countries with different types of currencies due to nationalism

Voters commonly condemn politicians for being insincere, but politicians often must disguise their true feelings when they make public statements. if they expressed their honest views—about, say, their party's policies—then achieving politically necessary compromises would be much more difficult. clearly, the very insincerity that people decry shows that our government is functioning well. which of the following, if true, most seriously undermines this reasoning? (a) achieving political compromises is not all that is necessary for the proper functioning of a government. (b) some political compromises are not in the best long-term interest of the government. (c) voters often judge politicians by criteria other than the sincerity with which they express their views. (d) a political party's policies could turn out to be detrimental to the functioning of a government. (e) some of the public statements made by politicians about their party's policies could in fact be sincere.