Neither and nor are used together.
Either and or are used together.
B uses neither and or together, so that is wrong.
C uses either and nor together, so C is wrong.
D uses neither and or together, so D is wrong.
That leaves A.
A used neither and nor together, which is correct.
So the answer is A.
I think it would be classified as realistic, or scientific nonfiction.
A child asks him look in the first line of section six
It is dark because Barnardo has trouble seeing the other guard.
During the Civil War (1861-1865), the number of casualties and deaths were greater than our nation's losses in all other wars, from the American Revolution through Vietnam.