B.out of left field so the answer is b I think good luck
Answer:
It is the practice of voting directly for proposed laws.
Explanation:
REFERENDUM. : an event in which the people of a county, state, etc., vote for or against a law that deals with a specific issue : a public vote on a particular issue.
Referendum Measures are laws recently passed by the Legislature that are placed on the ballot because of petitions signed by voters. Referendum Bills are proposed laws referred to the electorate by the Legislature.
B. saved lives. Mandatory seatbelt laws have saved lives.