Answer:
The approach Dr. Brian is using is:
A) The psychodynamic approach
Explanation:
The psychodaynamic approach in psychology focuses on how the unconscious forces and drives of a person influence his/her behavior. It also analyzes the conflict between such drives and society's demands. This approach tends to focus on early childhood, its experiences and traumas, as well as the different personality structures. Notice that Dr. Brian has found a link between Darcy's behavior and early childhood's experiences.
The psychodynamic approach includes theories by Sigmund Freud, Carl Jung, Alfred Adler, Erik Erikson, among others.