The word "either" is a correlative. The answer is D. This is because a correlative conjunction connects two nouns and ideas that relates to each other. Either uses "or" so it connects two choices in one situation.
You need to attach an image of the passage so I can read it.
Answer:
C?
Explanation:
I haven't read these texts, so I have no context whatsoever, but C makes the most sense in my opinion.
-hope it helps
