A(n) __________ is an amendment introduced by a private citizen. A. initiative B. referendum C. federalist system D. supremacy clause
A-- Initiative.
Referendums have to do with only addressing a single, specific issue.
Federalist systems have to do with having a representative head to the government.
Supremacy clauses have to do with which laws are superior to others in case of conflict. (Federal law is superior, by the way.)