Answer:
The right answer is b. An international effort authorized by the United Nations.
Explanation:
The real motive of the USA was to stop what was perceived as a deliberate move of communist expansion in Asia by Moscow and its allies. Actually, it wasn´t so. After the invasion of South Korea by the North, the Truman administration mobilized forces and got a quick resolution by the UN Security Council that allowed the Americans to enter the conflict as a UN force.
The American leaders in Washington didn't think that Japan would attack in Hawaii.
That suggestion clears up the question and points to the real issue:
Washington thought, because it was so "alerted and prepared", that Hawaii would would be the last place Japan would plan an attack on.
Well, that, evidently, wasnt the case.
Answer:
The correct answer would be B, traditionalist