Question

Macroeconomists cannot conduct controlled experiments, such as testing various tax and expenditure policies, because:

Answer 1

Answer:  The correct answer is :  Because they must make use of the data history gives them

Explanation:  Macroeconomics is the study of the economy as a whole. Macroeconomic models consist of making different assumptions to explain different aspects of macroeconomics. Macroeconomics is based on microeconomic fundamentals.