The correct answer is:
Presidents can serve two consecutive times, but can't run for a third consecutive time, but Presidents can serve a third non consecutive time.
Step-by-step explanation:
The Twenty-second Amendment of the United States Constitution limits the number of terms presidents can serve to two consecutive times. This amendment was proposed by President Harry S. Truman to the Congress as part of a reorganization of the federal government, and to prevent an "elective monarchy" because the Constitution didn't limit the number of years that presidents could serve, it only stated that terms lasted four years. The Twenty-second Amendment was ratified on 1951.
"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 President more than once."