Please solve and explain in detail the chart and letters a, b,c,d,e,f,g and h at the bottom and the explain the degree of sensitivity embodied by the network

4. Identify burst activities and merge activities in the following network. Determine the early/late times, critical path, total slack for each activity, and project duration for the network represented by the following table. You can enter your values in the table or clearly label notations around a network diagram attached to your submission. Once values are determined, discuss the degree of ser-itivity embodied by the network