The main fact about Amtrak corporation that is promoting and upgrading the passenger rail service is that its operates without any government subsidy.
It is a railroad service that essentially provides an inter-city rail service in the United States and Canada.
Hence, despite that Amtrak corporation that is promoting and upgrading the passenger rail service, it does not operates without any government subsidy.
Therefore, the Option E is correct.
Read more about passenger rail
brainly.com/question/11433327
#SPJ12