stephen hall is developing a program in supply chain management certification for managers. hall has listed a number of activities that must be completed before a training program of this nature could be conducted. the activities, immediate predecessors, and times appear in the accompanying table . Activity Immediate predecessor Time (days) A -----2 B -----7 C -----2 D B 10 E A,D 4 F C 5 G E,F 10 This exercise contains only parts, b, c, and d. 1. The critical activities for the leadership training program development project are - - 2. The project length for the leadership training program development project = -- days 3. Slack time for each of the activities is : ACTIVITY A B SLACK TIME