System requirements can include functional requirements, non-functional requirements, and domain requirements.

### Why this is right The material lists these three categories as types of system requirements. They cover system behavior, system properties or constraints, and requirements arising from the application domain. ### The concept Functional requirements describe services or behavior. Non-functional requirements describe properties and constraints such as reliability, response time, or storage needs. Domain requirements reflect characteristics of the system's application area. ### Terms - **Domain requirement**: A requirement reflecting characteristics of the system's application domain. ### Remember System requirements include behavior, quality constraints, and domain-specific needs.