What describes the information that a system must provide?

The information that a system must provide is best described by user requirements. User requirements detail what users need from the system in order to fulfill their tasks and objectives effectively. These requirements include specific functionalities, performance criteria, and quality attributes that must be met by the system to ensure that it serves its intended purpose.

By focusing on user requirements, the system analyst can gather and prioritize the necessary specifications that guide development and implementation. This ensures that the final product aligns with user expectations and needs, which is fundamental for the overall success of the system.

The other options, while related to system development, do not encapsulate what the system must provide as directly as user requirements do. Business models define the broader vision and strategy behind a business, system architecture outlines the structure and organization of the system, and process flows illustrate how processes interact within the system but do not capture the specific information needs of users.