5. The conversion of a barter economy to one that uses money A. Increases efficiency by reducing the need to exchange goods and services. B. Increases efficiency by reducing the need to specialize. C. Increases efficiency by reducing transactions costs. D. Does not increase efficiency. E. None of the above. 6. In a fiat-money standard, money has value because A. It is backed by gold or other precious metals. B. Of the taxing and borrowing power of the government. C. It is backed by a basket of commodities. D. It has an intrinsic value. E. All of the above. 7. Financial intermediaries A. Provide a channel for linking those who want to save with those who want to invest. B. Have been a source of rapid financial innovation. C. Can benefit economic performance. D. Borrow funds from people who save and make loans to other individuals and businesses. E. All of the above