The video indicates that obsessions have their basis in: A. the evolutionary process of natural selection. B. early childhood experiences. C. a history of sexual abuse. D. altered brain structure.

The correct answer is:

B.early childhood experiences

Explanation:Obsessions are fixations over a certain object, condition, event, or phenomenon. Fixations are certain triggers we feel about something, whether it is positive or negative. It is just a strength that drives us into a certain position over an object. Thi fixations come from a certain experience in which we discover a positive or negative drive related to the object. Those experiences happen in our very first stages of life and remain with throughout all o our lifetime.

there has only been 12 presidents. the 12th president is/was moon jae-in

porter is writing economic history because he is focusing on the cost of developing vaccines.