Final answer:
If the United States continues to run large structural deficits year after year, the government will have to either increase taxes or decrease spending to address the deficit. Printing more money is generally not a viable solution, while borrowing more money is another possible option.
Step-by-step explanation:
When a government runs large structural deficits year after year, it means that it is spending more money than it is collecting in taxes. As a result, the government will have to make adjustments to its budget in order to address the deficit.
Option a, increasing taxes, is one possible solution. By increasing taxes, the government can generate more revenue to cover the deficit.
Option b, decreasing spending, is another possible solution. By cutting back on government spending, the government can reduce the amount of money that it needs to borrow and decrease the deficit.
Option c, printing more money, is generally not a viable solution. While it may provide a temporary fix, it can lead to inflation and decrease the value of the currency.
Option d, borrowing more money, is also a possible solution. By borrowing more money, the government can finance its deficit and continue to operate.