The study of inflation is part of ........

Explanation:

Inflation reduces the purchasing power of each unit of currency, which leads to increases in the prices of goods and services over time. Inflation, no doubt, is a macroeconomic variable since it takes into account the nation as a whole - affecting almost every sector in the economy on the broader front. Actually, this inflation aka inflationary gap in economics, is created by the excess of aggregate demand over aggregate supply