How many years can a president serve in usa?

the limit is actually 10 years at max. If the president dies 2+ years in his term, the vice president can take over and those remaining 2 years and it will not count as a term, BUT if the president die within less then 2 years that WILL count as a 1st term for the vice president.

there are no options provided but you can choose among the following gender-neutral pronouns: zir, hir, eir, vis, tem, eir.

in the normal course of maintaining a pronoun-antecedent agreement, we could have used the words his or her but since we are also required to use gender-neutral language, we need to replace it with its equivalent gender-neutral pronoun.