Define 'requirements modeling'.

Requirements modeling refers to the process of creating abstract representations of system requirements, utilizing various forms such as diagrams, models, or prototypes. This approach serves a vital role in the business analysis field, as it helps stakeholders better understand complex systems and ensures that requirements are accurately captured and communicated. By representing these requirements visually or conceptually, analysts can identify dependencies, clarify functionalities, and analyze how the system will behave, leading to improved decision-making and project outcomes.

The other options focus on different aspects of business processes that are not related to the core concept of requirements modeling. For example, collecting user feedback is more about validation and user engagement rather than modeling requirements. Similarly, developing financial or marketing requirements pertains to specific domains that do not encompass the broader, abstract representation of system functionalities that requirements modeling aims to achieve.