Akey common element among different forms of therapy such as psychoanalysis, behavioral therapy, and drug therapy is a relationship that focuses on

The correct answer is improving behavior and mental processes and health.
The aim of all these therapies, such as psychoanalysis, behavioral therapy, and drug therapy is to help an individual better their health, the way they behave, and overall their lifestyle. By changing the way they think, therapists will enable the patient to become healthier both physically and mentally. 

It allowed for things to be produced much more quickly and efficiently