C is correct. It should be rotation
A. Revolution is not definitly correct
B. Either
Night has become a symbol for death
Vertical zonation is basically like the main pattern of littoral assemblages on rocky shores. at a regional scale.
Answer: A
C and D are wrong right off the bat because building a railroad during bad whether is not enjoyable or easy, plus it took seven years to build so it was not fun
It is not B because the passage does not state anything about people preferring to ride in wagons to riding by train
So it is A because truly it was a difficult process