Sharon was born in Georgia and is 20 years old. She currently lives in Alabama, but plans on moving back to Georgia soon. She has never committed a crime. If she tries to register to vote for an upcoming election in Georgia, what will be the outcome?

She can’t if she doesn’t live in georgia yet but if she does she can vote there

Your voting residence is within your state of legal residence or domicile. It is the address that you consider your permanent home and where you had a physical presence. Your state of legal residence is used for state income tax purposes, and determines eligibility to vote for federal and state elections and qualification for in-state tuition rates.

State of legal residence and voting residence are sometimes mistaken for home of record. While your voting residence may be the same as your home of record at the beginning of your military career, you need to update your voting residence if you change your legal residence or domicile at any point.
This is not my answer this is just evidence to back up your answer.
Source : Fvap.Gov