Which of the Following Explains Why Family Transitions Occurred in the Past

Which of the following explains why family transitions occurred in the past?

A) The higher mortality rates meant that families often experienced the death of spouses or parents.
B) Families were forced to change and start over because government regulations required new family starts every 10 years.
C) Societal norms of the past dictated fresh family starts every five years.
D) When couples became unhappy with their family situation, they opted for divorce and created new families instead.