This is a subjective question, herice you have to write your answer in the Text.pieid given below.

Use the information contained belosy to compress one time unit per move uxing thefeast cost method. Reduce the schedufo until you reach the crash point of the netryopk. For each move identify what activity$($s$)$ was crashed, the adjusted total cost, and explain your choice if you have to choose between activities that cost the same.

Note: Crash point of the network is the point in which the duration cannot be reduced any furthe.