The correct answers are A, C, and D . In FAST diagramming, scope lines define the boundary of the subject being studied. They separate what is included in the VM study from functions that explain the larger reason for the study or the initiating input outside the study boundary. SAVE’s VM glossary explains that a FAST diagram includes scope lines and classified functions such as basic, higher-order, and lower-order functions. It also defines subject scope as the portion of the project, product, or process selected for the value study. ( )
Option A is correct because scope lines represent the limits of the VM study subject. Option C is correct because the basic function is placed immediately to the right of the left scope line; it represents the essential purpose of the subject within the study. Option D is correct because the higher-order function is placed to the left of the left scope line and explains the broader need or goal for which the basic function exists. SAVE defines the higher-order function as outside the scope of the subject under study. ( )
Option B is not selected because the key convention is boundary placement, not “solid line” style. Option E is incorrect because the lower-order function is outside the right scope boundary, not immediately left of it.
References/topics: Function Analysis Phase; FAST Diagram; Scope Lines; Basic Function; Higher-Order Function; Lower-Order Function.
