Which of the following bonds are issued by the U. S. government?

corporate bondsjunk bondssavings bondsmunicipal bonds

I believe that the bonds issued by the U. S government are the saving bonds. Corporate bonds are bonds issued by corporations in order to raise money for business expansion. Junk bonds are types of bonds that are lower rated however, they are potentially higher-paying. Municipal bonds are bonds issued by a state or local government for the purpose of financing social amenities and infrastructure such as improvements of highways, state buildings, libraries, parks and schools.