So many authors have presented their ideas to define existing organizations of our lives. There are so many comprehensive definitions that emphasize different specifics of organizations. One of the most accepted, comprehensive and common definitions is the one made by C. I. Barnard, which argues that “organization is a system of consciously coordinated activities of two or more persons.” This very definition by Barnard is used commonly since it encompasses all organizations with different features. This definition increasingly emphasizes the coordination created among individuals. The common side of all organizations is to act in coordinated ways to reach their aims within a certain frame of aims. As two prestigious names in the field of organizational studies, Blau P.M. and Scott W.R. extend the scope of the definition above and utter these words: “The accomplishment of an objective requires collective effort, men set up an organization designed to coordinate the activities of many persons and to furnish incentives for others to join them for this purpose.” There are many other definitions by various other theorists. The definitions above are common ones, which make us prefer them to include in our text. The reason for this much variety about the definitions of organizations is related to the nature of the organizational structure. Organizations are, by their nature, social structures with a highly dynamic system and intense interaction with the surrounding, which leads to treating organizations with different approaches from different academic fields. Not just organizational theorists, but also theoreticians from sociology, economics, psychology, and politics elaborate on organizations to understand and explain them. Organizational theory field has also drawn a lot from other academic disciplines. Researchers that were influenced by different disciplines and trends within organization theory strived for understanding organizations with differenttheoretical backgrounds, which caused various schools of thoughts to emerge. As also understood from the information given the correct answer is “E”.