Which of the following statements best reflects the concept of systems theory?

The statement that the various parts of a system depend on each other for survival aligns closely with the principles of systems theory. This theoretical framework emphasizes that systems are composed of interrelated components that function together as a whole. Each part of a system plays a vital role and influences the overall dynamics and effectiveness of the system.

In systems theory, the interactions and dependencies among the parts are crucial, as they determine the behavior of the entire system. This interconnectedness means that a change or disruption in one part can have significant consequences for other parts and the system as a whole. This holistic perspective is essential in fields like ecology, sociology, and organizational behavior, where understanding relationships and interdependencies is key to problem-solving and system optimization.

Other options do not capture the essence of systems theory. The idea that systems are independent overlooks the critical component of interconnectedness that underpins the theory. Likewise, the notion that every system operates under the same set of rules ignores the uniqueness and specific dynamics that characterize different systems. Lastly, suggesting that the parts of a system are interchangeable undermines the unique roles and functions that each component fulfills, which is fundamental to the understanding of how systems work.