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

activity	immediate prececssor(s)	time days
a	-	10
b	-	6
c	-	3
d	b	2
e	a,d	3
f	c	5
g	e,f	8

b. The critical activities for the leadership training program are either choice (1. c-f-g), (2. b-d-e-g), or (3. a-e-g)

c. The project length for the leadership training program development project is how many days

d. slack time for activites a-g