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:

$\backslash$table$[[,,],[$Activity$,$Immediate Predecessor$($s$),$Time $($days$)],[$A$,-,10],[$B$,-,7],[$C$,-,3],[$D$,$B$,2],[$E$,$A$,$ D$,4],[$F$,$C$,6],[$G$,$E$,$ F$,12]]$

This exercise contains only parts $b,c,$ and $d.$

b$)$ The critical activities for the leadership training prog

c$)$ The project length for the leadership training program development project $=26$ days.

d$)$ Slack time for each of the activities is:

$\backslash$table$[[$Activity$,$Slack Time$],[$A$,0],[$B$,1],[$C$,5],[$D$,1],[$E$,0],[$F$,5],[$G$,0]]$