It was mainly due to our unpreparedness for such an attack. We were totally unprepared and most of our ammo and equipment were stored somewhere else instead of the ships or in safely stored in locked cages, according to peacetime regulations. Prior to Pearl Harbor, intelligence officers suspected that the Japanese might strike the U.S. territory, but they highly suspect it would be the Philippines, not Hawaii, because no one could have thought that the Japanese would come a thousand of miles from their country to Hawaii and bypass our military bases in islands which were near Japan. At the same time, we were negotiating with the Japanese Empire for peace negotiations while the Japanese secretly planned a major airstrike upon U.S. targets behind our backs. Tokyo have always signaled warnings for peace so we took the offer seriously and without conditions, giving us the impression that we were on the right road.
<span>Many of the military men at Pearl Harbor as well as the civilians in the city of Honolulu were just living there lives as usual as any regular day until the sounds of planes roared over the Hawaiian skies and blast away the ships and other targets, and sent the city's population in fear and anger. We were not at war and we didn't expect that a foreign nation would came in to strike upon our soil.</span>
1) Battle of Midway, 1942 - US carriers ambushed the Japanese carrier force sent to attack Midway, sinking four carriers (the offensive backbone of the naval force sent) and losing only one (three US carriers were involved). It crippled the IJN and forced the Japanese onto the defensive.
2) Battle of Stalingrad, 1942 - 43 - The German Sixth Army was encircled and trapped by the Red Army and eventually surrendered when it was near starvation and almost out of ammunition. It destroyed the central spearhead of Hitler's offensive and pushed the Germans onto the defensive.
3) Second battle of El-Alamein, late 1942 - General Montgomery decisively defeated the Germans (led by the "Desert Fox", Erwin Rommel) at El-Alamein sealing the fate of the Afrika Corps and Italian ambitions for North Africa in retreat.
"A" is quite correct, though "C" adds a bit more detail of how soldiers felt about Trench Warfare. In my honest opinion, I think "D" is the correct answer.
Trench Warfare was rather horrific, and brutal to say the least -- it was also "boring" during stalemates if neither party was engaging in any sort of push.
Note: I'm not a teacher of any sorts! This is just my opinion from things I've learned in the previous years.
Answer:
C) The imbalance of older people to younger people in the population wasnegatively impacting China
