What are the typical requirements for registering to vote?
a. 18 years old by election day, u.s. citizen, and proof of residency
b. 18 years of age in an election year, proof of nationality, and deed of ownership
c. 21 years of age by election day, lived in the state they vote in for at least 10 years, and affiliated with the party in power
d. 21 years of age in an election year, proof of residency, and no criminal record

The typical requirements for registering to vote are 18 years old by Election Day, U.S citizen, and proof of residency (Option A)

Explanation: As per the US law, the citizen must be 18 years of age in order to vote. If a person is under 18 then he/she is not eligible to vote. Moreover, the person who is voting should be a United States citizen, this is important, in order to eradicate outside influence. In addition to that, you can only vote in the specific area where you are a resident and a proof of residency is required.