Sue Smith is developing a six$-$sigma quality certification program for managers. Smith has listed a number of activities that must be completed before a certification of this nature could be conducted. The activities, immediate predecessors, and times appear in the accompanying table:

Activity Predecessor Time $($Days$)$

A $-2$

B $-5$

C $-1$

D C $10$

E A$,$B $3$

F D $6$

G E$,$F $8$

a$.$ What is the critical path?

$[$ Select $]$

b$.$ What is the total project completion time?

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c$.$ What is the slack time for each individual activity?

$[$ Select $]$

d$.$ What is the ES$/$EF and LS$/$LF for activity E$?$