Which President was elected four times?

Franklin Roosevelt is the only U.S. President who was elected to four terms. He first assumed the presidency in 1933 and was re-elected in 1936, 1940, and 1944. His unprecedented four-term presidency was a response to the Great Depression and World War II, during which he played a vital role in shaping U.S. policies and international relations.

The significance of his four terms led to the ratification of the 22nd Amendment in 1951, which limited future Presidents to two elected terms. This was a reaction to the concerns over the concentration of power in the hands of a single individual for an extended period.

The other options reflect notable Presidents in their own right, but none were elected to four terms. Theodore Roosevelt, for example, served nearly two full terms but did not seek a full term after his initial replacement of McKinley. Harry S. Truman completed Roosevelt’s fourth term and was elected once more to a full term, but he did not serve four terms. Lyndon B. Johnson also completed a term after Kennedy's assassination and was elected once more, but he did not serve more than two full terms. Thus, Roosevelt stands out for his historic four-term election.