I think the answer is C because other choices doesn't really make sense. Especially choice A. Hope this helped.
The right answer is B. It is not uncommon that after a major conflict a country downsizes its military force. This occurred, for instance, in the United States, and this was seen as an opportunity to reform the Army. England, where the military consisted in part of volunteers, also rushed to demobilize its force. Germany, on the contrary, was forced to drastically reduce the size of its military force as a result of the signing of the Versailles Treaty (1919).
Answer:
B. Federal laws can supersede state laws
The on thing I wish I knew taking a test on it now