Answer:
- the changes that take place within an economic system as a whole
- the challenges that economic systems face, such as inflation and unemployment
- patterns of change within an economic system, as seen through economic models
- a nation’s economy in isolation, without considering how it integrates with other nations
Explanation:
Macroeconomics studies the economy as a whole, either open or closed economies. Closed economies are those that do not interact with other countries, i.e. they do not export or import goods and services. Although most of the world's economies are open economies, that do engage in foreign trade.
Macroeconomics is a social science since it cannot perform a research study that involves everyone and every transaction in an economy because they are simply billions of them. Instead it relies on past tendencies and information to develop economic models.
Macroeconomics focuses on unemployment, growth rate, gross domestic product and inflation.
*the individual interactions of producers and consumers ⇒ this is studied by microeconomics, not macroeconomics
