Activity

Duration

Immediate follower

A

$1$

B$,$ C$,$ D$,$ E

B

$3$

F

C

$4$

F

D

$2$

F

E

$4$

F

F

$4$

G

G

$1$

$-$

From the AoN in question $1($above$),$ identify the activity $($activities$)$ with slack:

a Activity A

b Activity B

c Activity C

d Activity D

e Activity E

$1.$

a

$2.$

b$,$ d

$3.$

b$,$ c$,$ d

$4.$

a$,$ b$,$ c$,$ d

$5.$

None of the options provided