(A) ** 8 years
(B) 1 year
(C) 100 years
(D) 4 years
EXPLANATIONS BELOW
Concept note-1: -Section 1. No person shall be elected to the office of the President more than twice, and no person who has held the office of President, or acted as President, for more than two years of a term to which some other person was elected President shall be elected to the office of the President more than once.
Concept note-2: -Roosevelt spent the longest. Roosevelt is the only American president to have served more than two terms. Following ratification of the Twenty-second Amendment in 1951, presidents-beginning with Dwight D.
Concept note-3: -The Twenty-Second Amendment says a person can only be elected to be president two times for a total of eight years. It does make it possible for a person to serve up to ten years as president. This can happen if a person (most likely the Vice-President) takes over for a president who can no longer serve their term.