Answer:
see below for the network
ABCDF is the critical path
Explanation:
The critical path is the longest path from start to finish. Here, it is ...
A-B-C-D-F . . . critical path
The total time required is 4+2+3+12+6 = 27 time units. In order to accomplish the project in that time, the team must be capable of executing task E in parallel with some parts of A, B, C, and D; and it must be capable of executing task G in parallel with task F.