What Led to the Development of Behavioral Models of Couples

Multiple Choice

What led to the development of behavioral models of couples therapy?

A) Other forms of therapy were time consuming and expensive to carry out,thus there was a need to develop a more pragmatic approach.
B) Most therapeutic techniques were based on Freudian thinking,which was discredited in the mid-20th century.
C) Evidence revealed that the popular models were ineffective in producing lasting change.
D) There was a need for systematic treatments that could measure the effectiveness of the intervention.