Final answer:
In the long run, an increase in the money supply by 4% will result in an increase in the price level in the economy.
Step-by-step explanation:
In the long run, assuming full employment, an increase in the money supply by 4% will result in an increase in the price level in the economy.
This is due to the concept of inflationary pressure.
When the money supply increases, there is more money available in the economy, leading to increased demand, which in turn causes prices to rise.