Approaches to toilet training have changed over time. at one point, it was suggested to parents to postpone toilet training until the child was at least a year old to avoid serious personality problems later on. this view is consistent with

This view is consistent with the psychoanalytic theory.
Created by Sigmund Freud in the 19th century, psychoanalytic theory researches the development of a person's personality through the interactions of three structures of the mind: id, ego, and superego. According to this theory, even toilet training can lead to personality problems in the future if taught wrongly. 

The answer is c. religion

The holy roman empire.