Roger Ginde is developing a program in supply chain management certification for managers. Ginde has linted a number of activities that must be completed before a baking pigram of this nature could be the activities, immediate predecessors, and times appear in the accompanying table Activity Immediate Predecessors) Time (days) A B C D B 10 E AD . F C 6 G EF 12 This exercise contains only parts b, c, and d b) The critical activities for the leadership training program development project are B-D-E-G c) The project length for the leadership training program development project 31 days d) Slack time for each of the activities is Activity Slack Time 13