What is one specific requirement of a negotiable instrument? O A. It must involve an exchange of goods.
B. It must provide for a fixed amount of money.
O C. It must be agreed to orally.
O D. It must involve two parties who are friends.

The prebisch–singer hypothesis concludes that: a. technology lowers the cost of manufactured products, so developing countries should see an increase in their terms of trade. b. developing countries experience a long-run decline in their terms of trade, as the demand for primary products in higher-income countries declines relative to their demand for manufactured goods. c. because of unfair trading practices, labor in developing countries is exploited. d. opec has been responsible for a slowdown in the world's standard of living.