Answer:
A. Fund government programs such as national defense and social welfare
Step-by-step explanation:
The taxes paid by the US people are used to invest in technology, education, and to give social and medical benefits. There are three major categories on which tax money is spent:
i) Health programs
ii) Social Security
iii) National Defense
If people will fail to pay taxes, government of US will be unable to fund government programs such as national defense and social welfare.