Answer:
Option A.
Explanation:
The study of the behavior and decision making of entire economies, is the right answer.
Macroeconomics is a field of economics that deals with the behaviour, performance, arrangement and decision-making of an economy as a mass. Macroeconomics includes provincial, state, and global economies.
While macroeconomics is a widespread area of study, there are two fields of research that are typical of the training: the effort to recognize the origins and results of short-run variations in national revenue, and the endeavor to recognize the determinants of long-run financial growth.
