Answer:
The correct answer is option d.
Explanation:
Inflation can be defined as a continuous rise in the general price level of goods and services in an economy for a long period. It causes a decline in the purchasing power of money.
Inflation can be of three types,
Inflation can occur because of a number of reasons. It basically happens because aggregate supply cannot be increased to a great extent to cope up the excessive increase in the aggregate demand.
The consumer price index is a tool to measure inflation rate. Other tools to measure inflation are the wholesale price index, producer price index, etc.