A(n) is an amendment that is presented to the people on the ballot of a statewide election to vote on. a. initiative b. referendum c. federalist system d. supremacy clause

B. Referendum

Explanation:

When a new law or a constitutional amendment is proposed, whether or not it is going to be accepted depends on the results of the referendum, a type of a popular vote. The word referendum originates from the Latin referendum, meaning that which ought to be announced, but its modern meaning dates from the 19th century when the new Swiss constitution declared that the voters could directly vote on certain issues. As, according to the US Constitution, there is no possibility of referenda (referendum - pl. referenda) on a national level, the referenda in the US usually deal with local or state matters.

b

Explanation:

c, they united with once