Answer:
D
Step-by-step explanation:
It's between the first and the last one.
It depends on how it will be developed.
The second one isn't true at all. The Pacific was a major arena during WWII
The third one couldn't be any duller. Your immediate response should be "So What?"
I'm certain that the last one is true of WWII but not so much WWI. WWI was mostly a trench war, so
I'm going to say the the best answer is the first one. It would be interesting to see how the first one would be developed