Answer:
Psychodynamics
Step-by-step explanation:
Psychodynamics is an approach to psychology which systematically tries to understand the problem at hand by studying all the underlying aspects of a person's psyche.
Here, Steve's past experiences are being analyzed in the hope that they might shed some light on his feelings of instability. Tackling the cause of why he feels the way he feels is what the therapist is attempting.
Hence, Steve’s therapist would most likely identify with the psychodynamics psychological perspective.