Final answer:
The category not part of Maslow's Hierarchy of Needs is 'c. Power'. Maslow's theory includes physiological, safety, belongingness/love, esteem, and self-actualization needs.
Step-by-step explanation:
The category of needs identified by Maslow that is NOT part of his hierarchy is c. Power. Maslow's Hierarchy of Needs consists of the following levels: physiological needs, safety needs, belongingness/love needs, esteem needs, and self-actualization at the top. While cognitive and aesthetic needs are sometimes included between esteem and self-actualization, and self-transcendence is sometimes considered above self-actualization, power is not typically recognized as a category within Maslow's framework.