To reconstruct a CPM schedule electronically and determine the critical path, the following are essential:
* Detailed listing of working days for each calendar (Option A): Ensures accurate scheduling across varying work periods.
* Predecessor and successor relationships (Option B): Establishes logic and dependencies.
* Tabular data including early/late dates (Option D): Necessary for computing float and identifying the critical path.
Assigned party responsibility (Option C) is important for resource management but not required to calculate the critical path.