Consider the following data for questions $1$ through $5$:

Activity Duration $($days$)$ Description Preceding Activity$($ies$)$

A $6$ Create script for advertisement $-$

B $4$ Book technical crew A

C $4$ Book actors A

D $3$ Create props and costumes B$,$C

E $6$ Book location C

F $5$ Filming and editing D$,$E

$1.$How many paths are there through this network?

a$)1$

b$)2$

c$)3$

d$)4$

$2.$How many critical paths are there?

a$)0$

b$)1$

c$)2$

d$)3$

$3.$Which activities have slack?

a$)$A

b$)$B

c$)$E

d$)$F

$4.$What is the slack for activity B$?$

a$)0$

b$)1$

c$)2$

d$)3$

$5.$What is the expected duration of this project?

a$)19$

b$)20$

c$)21$

d$)22$

$6.$Which of the following statements about a network$$s critical path$($s$)$ is always true?

a$)$The critical path$($s$)$ is the path that passes through the most activities

b$)$The critical path$($s$)$ is the path with longest total time duration

c$)$The critical path$($s$)$ is the path that passes through the most slack activities

d$)$The critical path$($s$)$ is the path that gets us through the network fastest.

$7.$In these network diagrams, slack is best described a measurement of what?

a$)$The difference between an activity$$s normal cost and its crash cost

b$)$The difference between an activity$$s early start and early finish times

c$)$The difference between the duration of two precedent activities

d$)$The difference between an activity$$s early start and late start times