Final answer:
A swift, dramatic transformation of an entire system is referred to as a 'transformational change'. It is a fundamental and significant shift in strategy, processes, or goals, as opposed to smaller, incremental changes. The correct option is C.
Step-by-step explanation:
A swift, dramatic transformation of an entire system is called a transformational change. The option that best fits this description in the provided question is 'c. Transformational change'.
Transformational change refers to a major shift in an organization or system, typically involving a complete overhaul of processes, strategies, or goals. Unlike incremental change, which is slow and steady, and reactive change, which occurs in response to external pressures, transformational change is often proactive and encompasses a fundamental redefinition of an organization's way of functioning.