Answer:
input prices decrease.
Explanation:
Aggregate supply is also called domestic final supply is the total supply of goods and services that is made available in an economy in a given period of time. It looks at the national supply of all goods and services.
If there is a decrease in input prices, supplier's cost of doing business reduces and he will have more money to engage in more production. This will result in increased production and a shift of aggregate supply curve to the right.
This is illustrated in the attached diagram.
