How Can the Amount of Federal Spending Increase Dramatically Despite

How can the amount of federal spending increase dramatically despite the fact that the federal workforce has scarcely grown at all?

A) Most government programs are financial, so recipients simply receive a check from the government.
B) Innovation and technology have made government employees much more efficient.
C) Through delegation of administrative duties to state and local government agencies, Congress can add programs, which voters like, without increasing the federal bureaucracy, which voters do not like.
D) It means that the amount of federal spending is wasted on duplicate programs and corruption is rampant within federal programs without effective oversight.