Which of the following statements accurately describes a complex adaptive system?

A complex adaptive system (CAS) is characterized by the property that understanding the individual components does not lead to a perfect understanding of the entire system's behavior. This is because CAS are dynamic networks of interactions where the behavior of the whole system emerges from the interactions among its parts. Option A describes a process but does not capture the essence of complexity. Option C suggests a deterministic algorithm, which is not accurate for describing CAS. Option D touches on evolving ways of working, but it does not correctly define the nature of CAS in the context of complexity theory.