Which of the following is true? i) A rational choice is made on the margin. ii) Microeconomics is the study of the national economy while macroeconomics is the study of the global economy. iii) Economists try to understand how the economic world works by testing normative statements.

Migration from poor to rich countries hurts poor countries through

a. loss of educated individuals b. residents sending money abroad to migrants c. tightening job markets at home d. opening executive jobs to workers from developed countries e. all of the above

A nation's technological gains have increased labor productivity and, as a result, the average number of hours worked each week has been falling. How do Gross Domestic Product (GDP) calculations account for this shortening of the average workweek?

A) Real Gross Domestic Product (GDP) does not factor in an increase in leisure time but per capita real Gross Domestic Product (GDP) does. B) Neither real Gross Domestic Product (GDP) nor per capita real Gross Domestic Product (GDP) includes the increase in leisure time that results, so the nation's actual economic growth will be overstated. C) Gains in leisure time are dollar-valued and included in real per capita Gross Domestic Product (GDP) gains. D) Gains in leisure time are not included in Gross Domestic Product (GDP), so any increase in real per capita Gross Domestic Product (GDP) will understate the nation's actual economic growth.