Without knowing the context some times the point the author is trying to get across can be viewed in different ways.
The answer is C. On edge.
Once forged,loyalty is a powerful opponent for even bucks natural instincts
Just took the rest on edge :)
Explanation:
a character who undergoes scientific internal change throughout the course of a story the development of a dynamic characters often step total and unstated and is not due to a change of a character circumstances
Considering there are no options, the best I can do for ya is tell you that which ever is more convincing towards his statement then that is most likely the answer. Sorry and hope this helps.
<span>Charles Lindbergh's solo flight across the Atlantic in 1927 spurred the growth of air travel through its effect on decision makers.</span>