Identify an assumption of the humanistic–positive perspective of personality. Traits are the major force behind personality. One has a natural interest in becoming the best person possible. One's personality resides in the unconscious and early childhood experiences lay the foundation for adult personality. Personality traits have their foundations in biology.

One has a natural interest in becoming the best person possible.

Explanation:

The humanistic-positive perspective of personality is a theory developed by Abraham Maslow. Maslow believed that people have control over their personalities, and that they can shape these based on their personal interests. He argued that people had a hierarchy of needs, which ranged from the most basic (food, water, etc) to more complex ones such as self-esteem and love. The "best" qualities are at the top of the pyramid, and people are motivated to reach the top in order to become the best person possible.

the answer your looking for is c. : )