The national debt seems to grown every year which means that nearly all presidential candidates talk about how they would reduce it, but few actually seem able to reduce it once in office. Some citizens believe that the national debt will never be repaid since the United States government continues to spend more money than it takes in year over year. What is the national debt? a. amount owed in one year for all borrowing b. amount US citizens owe the government for services c. total amount owed by the government for all borrowing d. excess income of the federal government