The answer is that<em> by doing so he would violate the very customs Okonkwo is trying to preserve</em>, meaning that instead of being the bigger person he is becoming what he detests the most.
Another option would be that the use of violence would make him become the father he has always hated.
It would be A... Hope you lIke the Book=)
Explanation:
it was an impulse made a reason because it was totaliterean