Answer:
c. changes in both aggregate demand and aggregate supply.
Explanation:
Aggregate demand which is also known as domestic final demand (DFD) refers to the demand of services and final goods in a specific market. On the other hand, aggregate supply refers to the supply of that service or final good to a specific market. Hence, it is the difference in the aggregate demand and aggregate supply of a product or good or service in a specific market. When the supply is lower than the demand, it automatically leads to inflation. There the option that changes in both aggregate demand and aggregate supply is correct.