Answer:
d. National deficit
Step-by-step explanation:
A national deficit occurs when the federal government expenditures exceed the revenues collected. Every year, the federal government prepares a national budget for the following financial year. The budget details the expected expenditures and the projected revenues. In recent years, the expenditures have been exceeding the revenues collected, leading to a national deficit.
The federal government resorts to borrowing to cover the gap between the expenses and revenue collected.