Explain any three assumptions of Maslow's need hierarchy theory

Abraham Maslow gave a theory, based on human needs. He felt that within every human being, there exists a hierarchy of five needs. His theory is based on certain assumptions which are as follows:
(i) He believed that human behavior is based on their needs. Satisfaction of such needs influences their behavior. When one need is satisfied, they will move to strive for other needs.
(ii) A satisfied need can no longer motivate a person to work, only next-higher level need can motivate him.
(iii) A person moves to the next higher level of the hierarchy only when the lower need is satisfied.