I think it would be 4. The first one implies that it was the persons fault, the second and third one also implies that so I really think its 4. Hope this helps! :)
The answer would be:
b. Divided power.
A person who studies the origins and development organisation and functioning of human society is known as a Sociologist. The study is called Sociology.
I often say that we live in an age of trauma. There’s a simple way to think about that. The world is so messed up, we’re having to invent new forms of mental imbalance just to make sense of our own inability to cope with it. The world is so messed up it’s messing with our heads.