After serving in the military, even for 5 years, you still have to apply for naturalization and get approved in order to naturalize through military work. You must also meet a lot of requirements beyond your military service to be eligible. There is no citizenship contest. Being born in the United States automatically makes you a citizen, you do not need to be naturalized. D is the only answer that upon completion makes you a naturalized citizen because you have gone through the process of naturalization.
I believe there are several definitions of genocide because nobody can agree on just one. It evolves because genocide gets different over the years. I believe that in the future people will believe genocide is nothing at all.
