Which one of the following statements is incorrect? 1) Scarcity is a universal phenomenon that arises because resources are limited 2) Microeconomics is the branch of economics which studies how individual decision-makers behave and interact with each other 3) Macroeconomics is the branch of economics which studies the functioning and performance of a society's economy as a whole (often with a focus on levels of and changes in aggregate measures such as the unemployment rate, inflation rate, and Gross Domestic Product growth rate). 4)...