What is one requirement for registering to vote in Arizona?

Answer: B — Be a U.S. citizen

Being a U.S. citizen is a fundamental requirement for registering to vote in Arizona. This criterion ensures that only individuals who are members of the nation can participate in the democratic process. Voting is a right granted to citizens, reflecting their stake and representation in government decisions. In Arizona, like in many other states, this requirement is crucial for maintaining the integrity of the electoral process. Although having a valid driver's license and an active email address may be helpful for the registration process, they are not mandatory requirements for eligibility to register to vote. Additionally, the age requirement in Arizona is to be at least 18 years old, rather than 21, to vote. Thus, being a U.S. citizen remains the key prerequisite.