In the United States,

A. states with easier registration laws have shown no higher turnout rates than states with restrictive registration requirements.
B. voter registration periods and locations are highly publicized by the states, but registration requirements prevent many from taking advantage of them.
C. most states automatically register a person to vote when he or she acquires a driver's license.
D. voter registration requirements have usually been set by the states.
E. the federal government prevents states from forcing residents to register in advance of the election instead of on Election Day.

Answer: D