The hierarchy of needs motivation theory was propounded by:

A. Victor Vroom
B. Douglas McGregor
C. David McClelland
D. Abraham Maslow
E. Frederick Herzberg

D. Abraham Maslow

Explanation:
The correct answer is D. Abraham Maslow is known for his hierarchy of needs theory, which postulates that human motivation is based on fulfilling a series of needs, from basic physiological needs to higher-order self-actualization.