Why does activity 11001 not show successor activities?

 Activity 11001 Characteristics:

Activity 11001 (Spillway - Concrete) is logically defined as the final activity in the project.

Final activities in a project typically do not have successor activities since they signify project completion.

 Exclusion of Other Options:

Option A: Circular logic does not apply since the scheduling logic is linear and follows standard precedence diagramming methods.

Option B: Activity 11001 is not penultimate but the final activity.

Option C: The scheduler's error is highly unlikely in a controlled environment following PSP principles.

 Verification with PSP Guidelines:

The PSP Study Guide explains that final activities represent the culmination of a project's logical sequence and typically lack successors (Ref: PSP Study Guide, Chapter 2A: Logical Sequencing).