(b) Explain the terms critical path activity? -- nu le (c) The following are the time estimates and the precedence relationships of the activities in a project network: Activity 1-2 1-3 1-4 2-5 3-6 3-7 4-7 5-8 6-8 7-9 8-9 Time Estimate (Months) 5 6 3 5 7 10 4 2 5 6 5 4 (10marks) (3marks) i. Draw the project network diagram ii. Determine and highlight the critical path and the project completion time turvivo) War Illic thone tra