Which of the following is true? A. Both microeconomics and macroeconomics deal with same economic issues of inflation, unemployment and growth. B. Microeconomics focuses on the determination of the national output, while macroeconomics focuses on the production and output of individual industries. C. Microeconomics is the study of the economic aggregates, while macroeconomics deals with the functioning of individual industries. D. Macroeconomics is the study of the economy as a whole, while microeconomics deals with the individual decision-making units.

the correct answer is D. Macroeconomics is the study of the economy as a whole, while microeconomics deals with the individual decision-making units.

Explanation:

Macro economics emerged as a seperate disclipline in the late 1930's witht eh influence of the prominent british economist John Meynard Keynes. it looks at the economy as a whole and tries to solve major economic issues affecting the national economy such as the unemployment, inflation, GDP and current rate changes.

Micro economics on the contrary, looks at how the individuals and firms behave in an economy and tries to explain their decisions and how they react.