Answer:
This question is vague.
Explanation:
While turning on people is considered rude and almost childish, there are many reasons as to why people do it. Many times a lack of trust in one another. Leaving the relationship destroyed and a lack of empathy is missing.
Or taking another approach, scientifically, a person can turn on another the same way an animal would. If a survival instinct were to kick in, any togetherness would be left behind and your mental state would turn selfish. Putting yourself first over helping others.
An inspiration, a mentor...
A. seems to be the correct answer
I think it may be “one is much longer and complex than the other”
