(a) ( a Critical Path Method (CPM) is a network diagram technique for analyzing, planning, and scheduling projects. It provides a means of representing project activities as nodes or arrows, determining which are "critical" in their impact on project completion time and scheduling them to meet a target date at a minimum cost. By referring to Table 3a, develop a network diagram using the CPM technique by showing the early start (ES), early finish (EF), late start (LS), late finish (LF) times and float for each activity. Table 3a: Project Activities Predecessor Activity A B D E F G H Duration (days) 2 6 5 4 7 3 A B B CD E F 3 5