What type of scenario describes a step-by-step operation of a proposed system within defined circumstances?

The scenario that describes a step-by-step operation of a proposed system within defined circumstances is categorized as operational. This focus on how the system operates in specific scenarios is crucial for demonstrating practical, real-world use cases. It encompasses the way the system interacts with users or other systems, while also laying out the procedures to be followed to achieve a particular outcome.

Operational scenarios help stakeholders understand the expected behaviors and the sequences of actions that lead to specific functionalities being achieved. This context provides a clear picture of the system's interactions and usability within its intended environment, which is vital for meeting user needs and system requirements effectively.

While functional analysis addresses what the system should do, operational scenarios place those functionalities in practical situations, ensuring that the system meets both user expectations and practical operational standards.