Answer: (D) Humanistic perspective
Explanation:
The humanistic perspective is one of the type of psychology approach that basically focus on improving the individual self behavior and actualization.
The humanistic perspective is important for improving the one's potential and growth.
The main fundamental believe of this type of psychology is that the behavior of the people are naturally good and the stress and anger are occurred due to some social and the mental problem.
Therefore, Option (D) is correct.