Vaillant Recently Published an Article in the Well-Respected American Psychology

Vaillant recently published an article in the well-respected American Psychology Association journal suggesting that his levels of defense mechanisms are a way to measure psychological maturity and well-being. Which of the following is an argument he probably offered in support of this assertion?

A) All individuals consistently demonstrate the same defense mechanisms in identical situations.
B) The association between mature defenses and mental health is present across a number of indicators (occupational success, maturity, happiness) .
C) Individuals under severe stress do not revert to less mature mechanisms.
D) The levels of defense mechanisms are sequential and stage-like.