According to the Twenty-Second Amendment, what is the maximum time a person can serve as President?

The Twenty-Second Amendment to the Constitution was ratified in 1951 and establishes limits on the number of terms a person can serve as President of the United States. According to the amendment, an individual may not be elected to the office of the President more than twice, which amounts to a maximum of eight years in total due to the four-year term length of each presidential term.

However, the amendment also allows for special circumstances where if a Vice President or another individual assumes the presidency and has served more than two years of a term to which someone else was elected, they can only serve a maximum of an additional two years before being eligible to run for two full terms. This scenario makes the maximum possible time someone could serve as President up to ten years if they assume the office in the middle of a term. This is why the correct answer is ten years, as it encompasses the total allowed through both full and partial terms.