The night before, some 10 miles outside the entrance of Pearl Harbor, five midget submarines carrying two crew men and two torpedoes each were launched from larger "mother" subs. Their mission: enter Pearl Harbor before the air strike, remain submerged until the attack got underway, then cause as much damage as possible.


Which best identifies a key concept and explains how it is developed?

AThe concept is that the Japanese planned a surprise attack; it is developed by explaining the preparations they made to avoid being seen.

BThe concept is that Japanese fleet was stronger than the U.S. fleet; it is developed by describing how many ships they had.

CThe concept is that the Japanese were the only nation to possess submarines; it is developed by describing the sophisticated features of the equipment.

DThe concept is that the Japanese made little preparations for the attack; it is developed by describing how disorganized the attack was.

Someone help?