[Solved] An intrapersonal activity that involves only the self is called A) autoeroticism. B) cunnilingus. C) agape love. D) mate poaching. Progression Principle: A method in athletic training and personal development that emphasizes gradual increase in intensity or complexity to enhance growth without causing injury or burnout. Management Theories: A collection of ideas and principles that aim to explain how organizations operate and are managed. Maslow's Hierarchy: A psychological theory proposed by Abraham Maslow that outlines a five-tier model of human needs, from basic physiological needs to self-actualization. Abraham Maslow's Hierarchy: A theory in psychology, proposed by Abraham Maslow, which comprises a five-tier model of human needs, depicted as hierarchical levels within a pyramid.