I think it is War Plan Orange, but I wouldn't take an oath.
The presidency of Herbert Hoover on March 4, 1929, when Herbert Hoover was inaugurated as President of the United States, and ended on March 4, 1933. Hoover, was a true Republican, mostly he stood for "Anti-Interventionism", he was a major oponent of American entry into World War II and those were the ideas that assured his victory, during the Election of 1928.
The answer is A: Jerusalem.