The bonds issued by the U.S. government are savings bonds.
Here's a brief explanation of each option:
- Corporate bonds - Issued by corporations to raise capital. These are not government-issued.
- Savings bonds - Issued by the U.S. Department of the Treasury to help finance national debt. These are government bonds.
- Junk bonds - These are high-yield bonds issued by corporations that are considered to have a higher risk of default. They are not government-issued.
- Municipal bonds - Issued by states, cities, or other local government entities to finance public projects. These are not issued by the federal government.
Therefore, the correct answer is savings bonds.