Answer:
Positive psychology
Explanation:
Positive psychology: The term positive psychology is one of the fields of psychology and is defined as the scientific study that leads to develop a positive perspective related to the human beings' experience or a good life that creates an individual's life worth living. This field focuses mainly on societal and individual well-being.
Levels:
1. Group level.
2. Subjective level.
3. Individual level.
In the question above, Dr. Riley's approach to Rose's problems is most closely aligned to the positive psychology field.