Answer:
b. 17 weeks.
Explanation:
From the table given:
Activity Immediate Predecessor(s) Activity Time in weeks
A None 1
B None 1
C A 4
D B 5
E C,D 5
F E 3
G F 2
Suppose activity was delayed for two weeks, the critical path afte the delay would be combination of (A-C-E-F-G)
= 1 + 6 + 5 + 3 + 2
= 17 weeks