4.) All of the above.
The Postal Service, the Federal Deposit and Insurance Corporation, and the Tennessee Valley Authority; all comes under Government Authority.
The Postal Service's history back to July 26, 1775 under the Continental Congress. It later become the United States Postal Service nearly two centuries later.
The Federal Deposit and Insurance Corporation (FDIC) began as a temporary agency in 1993. It is an independent agency of the federal government.
The Tennessee Valley Authority was created on 18 May 1933 as federally owned corporation in the US. It was created to provide navigation, flood control, electricity generation, fertilizer manufacturing, and economic development to the Tennessee Valley, a region particularly affected by the Great Depression.