$2.$

Activity

ExpectedTime Immediate Predecessors Early

Finish Late

Finish

Slack Critical

Path?

A $4--$

B $6$ A

C $2$ A

D $4$ B

E $3$ B

F $4$ B$,$ C

G $2$ D$,$ E

H $3$ F

I $1\mathrm{.}5$ H

J $3$ G$,$ I