10 points! brainliest! the night before, some 10 miles outside the entrance to pearl harbor, five m i d g e t submarines carrying two crewmen 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? a) the concept is that the japanese planned a surprise attack; it is developed by explaining the preparations they made to avoid being seen. b) the concept is that japanese fleet was stronger than the u. s. fleet; it is developed by describing how many ships they had. c) the concept is that japanese made little preparations for the attack; it is developed by describing how disorganized the attack was. d) the concept is that japanese were the only nation to possess submarines; it is developed by describing the sophisticated features of the equipment.