Which category of government does the United States government fall under? Why?

The federal government of the United States  The federal government is composed of three distinct branches: legislative, executive, and judicial, The U.S. Constitution establishes a government based on "federalism." This is the sharing of power between the national and state (as well as local) governments. ... The federalist system allows the states to work for their own people

just like you man, i personally think its either c or d

explanation:

but good luck with the test man