Government corporations are entities created by Congress that operate like private businesses but serve a public purpose. From the options provided, the government corporations are:
- AMTRAK (National Railroad Passenger Corporation)
- United States Postal Service
The other options are not government corporations:
- Department of Veteran's Affairs is a federal executive department.
- Federal Trade Commission is an independent agency.
- NASA (National Aeronautics and Space Administration) is an independent agency.
So, the correct responses are:
- AMTRAK
- United States Postal Service