Paper 1 · November 2019 · network analysis
Which set of activities forms the critical path of the network drawn for shutting down the photographic business?
AA, B, E, G, I
BA, C, E, H, I
CF, D, E, G, I
DA, B, E, H, I
Explanation
The critical path is the longest route through the network, and its activities carry no float. Taking B rather than C or D, and G rather than H, gives A, B, E, G, I at 14 days. Any delay to one of those five pushes the whole closure back.
Derived from ZIMSEC Business Enterprise Skills Paper 1, Nov 2019, Q10