Identify the odd one out among the following organizational management and organizational behavior concepts based on their core theoretical orientation:   Human Relations Theory   Informal Functioning   Humanistic Theory   Social Theory / Social System View   Structural Theory   Select the correct option representing the odd one out: 

In organizational thought, management perspectives are broadly divided between the Behavioral / Human Relations Paradigm and the Classical / Structural Paradigm:   Behavioral & Human Relations Cluster (Items 1, 2, 3, and 4):Human Relations Theory (Elton Mayo), Humanistic Theory, Informal Functioning, and Social Theory all focus on the socio-psychological dimensions of work.   These perspectives emphasize employee motivation, informal workgroup dynamics, leadership style, interpersonal relationships, self-actualization, and social satisfaction as the primary drivers of productivity.   Structural / Classical Cluster (Item 5 - Odd One Out):Structural Theory (Max Weber / Henri Fayol / Frederick Taylor): Belongs to the classical school of organizational thought.   It focuses strictly on formal administrative hierarchy, functional division of labor, formal rules, job specialization, structural framework, and standardized procedures, largely ignoring the social and psychological needs of individuals.   Because Structural Theory focuses on formal mechanics rather than human and social dynamics, it is the odd one out among the listed options.