The correct answers are A, D, and E . A Function Performance Specification is used to define performance requirements in terms of the functions that must be achieved, not in terms of a predetermined design solution. In VM, value is linked to functions measured by the customer’s performance requirements, and the methodology seeks alternate ways to accomplish a function while meeting customer performance expectations. ( )

Therefore, it accurately identifies requirements specific to functions . FPS characterizes each function through criteria, expected performance levels, and flexibility, which makes the requirement measurable and traceable. ( Value Analysis ) It also communicates customer performance wants and needs because it documents what the user or customer expects the solution to accomplish. The FPS approach expresses needs and expected performance without reference to a specific solution, allowing broader innovation while maintaining customer requirements. ( Value Analysis )

It also helps uncover hidden assumptions because vague wants must be translated into explicit criteria, levels, and flexibility. Option B is incorrect because FPS does not evaluate or limit VM team options; it defines functional performance expectations. Option C is incorrect because FPS should avoid constraining designers to a specific design.

References/topics: Function Analysis Phase; Function Performance Specification; Customer Requirements; Performance Criteria; Functional Requirements.