Question content area Part $1$ Roger Ginde is developing a program in supply chain management certification for managers. Ginde 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$$ Predecessor$($s$)$ Time$($days$)$ A minus $2$ B minus $7$ C minus $1$ D B $10$ E $$A$,$ D $3$ F C $6$ G $$E$,$ F $10$ This exercise contains only parts$$ b$,$ c$,$ and d$.$ Part $2$b$)$ The critical activities for the leadership training program development project are B $-$ D $-$ E $-$ G $.$ Part $3$c$)$ The project length for the leadership training program development project$=30$ days. Part $4$d$)$ Slack time for each of the activities$$ is: