What Is the Focus of Dynamic Systems Theory (DST)

What is the focus of dynamic systems theory (DST) ?

A) to explain how new, complex patterns or properties of behavior come into existence as a result of simpler components or processes that are already part of a system
B) to explain how life on earth evolved from simpler to more complex organisms
C) to explain how mental life emerges from simpler cognitive processes such as attention to higher mental processes like problem solving
D) to explain how social relationships transform a person's worldview and sense of self