An example of violation of Enlightenment rights in Latin America under Spanish Rule is B. A rigid social class system strictly determined by birth, which granted rights to some and restricted rights from others.
There was a complex race system that asignated each individual its place in society according to its ascendency: metropolitan, colonial, indian, black, white. The other two are examples of Enlightenment rights that weren't respected until after independence.
Since the U.S. was fighting against communist nations in WW ll, I'd say answer A.
That was when the U.S. first realized how dangerous communism is, since the whole nation in a sense follows the wants of one man.
Fighting against Hitler, Mussolini, and the other guy (I can't remember who it was) really opened America's eyes to the horrors of communism, which is why they decided to strengthen the Democratic side of America.
I believe answer A. is correct.