Grayson really wants to get an a on his upcoming math test but he hates studying. He decides to set a goal for himself to study for 20 minutes every night this week and preparation for the quiz Friday. What kind of goal Grayson set for himself?

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.