Final answer:
C) Abraham Maslow believed in the inherent positive nature of humans and their drive toward self-actualization, with his hierarchy of needs illustrating this concept.
Step-by-step explanation:
The individual who believed that the basic quality of human nature is positive and that there is a strong drive toward self-actualization was Abraham Maslow.
Along with Carl Rogers, Maslow developed humanistic psychology which focuses on the positive growth potential of individuals. They stressed the importance of free will and self-determination, and aspired for people to become the best versions of themselves.
Maslow's hierarchy of needs illustrates this point with self-actualization at its apex, representing the achievement of one's full potential. Rogers supported these views but placed more emphasis on the congruence between an individual's self-concept and their actions to foster a healthy and productive life.