Which of the following actions are tangible evidence the federal government at work? select all that apply.

protecting wildlife in our national parks
printing money
fighting fires in the sierra nevada mountain range
protecting the florida coastline from illegal smuggling
regulating the price of oil

Good Morning!
 
The answer is clearly "print money". Only the federal government has the authorization to print and produce coins, thus, acting in the economy only in order to promote its functioning. Any other state presence in the economy ends up interfering with the functioning of the so-called "free market".
 
printing money

Hugs!