Which of the following best describes a system?

A system is best described as groups of interacting components because this definition encapsulates the essential characteristic of a system: the interaction and interdependence of its parts. In a system, each component plays a role that contributes to the overall function and purpose of the whole. This relational aspect is crucial; without interaction, the components would not form a cohesive structure that produces a unified outcome.

For instance, in the context of the U.S. healthcare system, various entities such as hospitals, clinics, insurance providers, and regulatory bodies work together to provide care. Each component interacts with others, influencing decisions, workflows, and patient outcomes, demonstrating how the whole system operates effectively through these interactions.

The other options do not reflect the essence of a system. A singular entity implies isolation, which does not convey the complexity and integration found in systems. A group of unrelated components does not acknowledge the necessary interconnections that define systems. A temporary organization suggests a lack of permanence and structure, which conflicts with the inherent stability and ongoing functionality found in a well-defined system.