Q$1.($W$3,1$ points$)$ Please construct the following project activity into a project network and

$(1\mathrm{.}1)$ Identify the critical path$($s$)$ of this project;

$(1\mathrm{.}2)$ Specify the slack times for those non$-$critical activities

Act. ID

Activity Time $($in Days$)$

Immediate Predecessor$($s$)$

A

$4$

$--$

B

$6$

A

C

$5$

A

D

$3$

B

E

$8$

B

F

$7$

C

G

$6$

D$,$E

H

$5$

F

I

$12$

G

J

$9$

G

K

$4$

H

L

$8$

I, J

M

$7$

K$,$ L

N

$3$

M