Which of the following statement(s) is/are true about the social system theory?

The correct answer is D. All of the above.

Chester Barnard was an American sociologist and economist who is considered one of the founders of organizational theory. His work on the social system theory of organizations has been highly influential in the field.

Barnard's social system theory is based on the idea that organizations are made up of individuals who interact with each other in order to achieve common goals. He argues that organizations are successful when they are able to create a system of communication and cooperation that allows individuals to work together effectively.

Barnard also emphasizes the importance of informal communication in organizations. He argues that informal communication can be just as important as formal communication, and that it can help to build trust and cooperation among employees.

Barnard's social system theory is a valuable tool for understanding how organizations work. It can be used to identify the factors that contribute to organizational success, and to develop strategies for improving organizational performance.

Here is a brief explanation of each option:

• Option A: Barnard also laid a lot of emphasis on clear and formal as well as informal channels of communication as it was the life of a smooth functioning organisation.

Barnard believed that communication was essential for the smooth functioning of organizations. He argued that organizations need to have clear and formal channels of communication, as well as informal channels of communication. Formal channels of communication are those that are officially sanctioned by the organization, such as memos, emails, and meetings. Informal channels of communication are those that are not officially sanctioned, such as conversations in the hallway or at the water cooler. Barnard believed that both formal and informal channels of communication are important for organizations, and that they should be used to share information, coordinate activities, and build relationships.

• Option B: He defines an organisation as "a system of consciously coordinated activities or forces of two or more persons"

Barnard defined an organization as "a system of consciously coordinated activities or forces of two or more persons." This definition emphasizes the importance of cooperation and coordination in organizations. Barnard argued that organizations are successful when they are able to get individuals to work together towards common goals.

• Option C: Barnard tries to understand human beings: one from within the organisation and two from outside the organisation

Barnard believed that it is important to understand human beings from both an internal and external perspective. From an internal perspective, he argued that it is important to understand the motivations and needs of individuals within organizations. From an external perspective, he argued that it is important to understand the environment in which organizations operate. Barnard believed that by understanding both the internal and external factors that influence human behavior, it is possible to create organizations that are more effective and efficient.