Which of the Following Is NOT Considered a Reason for the Stabilization

Which of the following is NOT considered a reason for the stabilization of the divorce rate over the past three decades?

A) Fewer people are marrying at younger ages.
B) Married people are more likely to be educated.
C) Divorce has once again become socially unacceptable.
D) Economic uncertainty and the high cost of obtaining a divorce is keeping people together.