The correct answer is A. Chester Barnard.
Chester Barnard was an American business executive, educator, and sociologist. He is best known for his work on organizational theory, including his book The Functions of the Executive. In this book, Barnard argues that organizations are cooperative systems that are held together by a common purpose and by the willingness of members to cooperate. He also develops a theory of authority, arguing that authority is based on the acceptance of the legitimacy of the authority figure by the subordinate.
Cart Rogers was an American psychologist who is considered one of the founders of humanistic psychology. He is best known for his work on client-centered therapy, which is a type of therapy that focuses on the client’s self-actualization.
AH Maslow was an American psychologist who is best known for his hierarchy of needs theory. This theory states that humans are motivated by a hierarchy of needs, with the most basic needs at the bottom of the hierarchy and the most complex needs at the top.
E Mayo was an Australian psychologist who is best known for his work on the Hawthorne Studies. These studies were conducted at the Hawthorne Works of the Western Electric Company in Chicago, Illinois, from 1924 to 1932. The studies found that workers’ productivity was affected by a number of factors, including the level of supervision, the physical environment, and the social environment.