Answer: a. is not subject to federal income tax and so these bonds pay a lower interest rate than otherwise comparable bonds issued by the U.S. government
Explanation:
Federal income taxes are the taxes that are used in the provision of national programs like settling national debt, infrastructural development, national defense, law enforcement etc.
If an individual owns bonds that are issued by the city of Sacramento, California, it should be noted that the interest that is earned each year on these bonds is not subject to federal income tax and so these bonds pay a lower interest rate than otherwise comparable bonds issued by the U.S. government. Comparable bonds that are being issued by the United States government pay an higher interest.