Answer:
Abraham Maslow
Explanation:
Maslow's famous hierarchy of needs, proposed by American psychologist Abraham H. Maslow, is based on the idea that every human being strives hard to meet his or her personal and professional needs. It is a scheme that has a hierarchical division in which the needs considered lower level must be met before the needs higher level. According to this theory, each individual has to perform a hierarchical "escalation" of needs to achieve their full self-realization.
