Promotion sera emtflgu setoch ብቻ be 1 sell 800 birr Dm    @Tbio12e1

Here is the logical diagram for the light rail system project planning phase: 1 --> 2 --> 3 --> 7 --> 9 \ / \ 4 / \ / --> 5 --> 6 Note that activity 8 is not included as it does not have any predecessors or successors. In the diagram, the arrows represent the dependencies between activities. For example, activity 2 cannot start until both activities 1 and 4 are completed. Similarly, activity 5 cannot start until activity 4 is completed, and so on. The diagram also shows that activities 2, 3, and 6 can all be performed in parallel once activity 4 is completed. This logical diagram can help project managers and stakeholders understand the sequence of activities and the dependencies between them, which can be used to identify potential bottlenecks or delays and to plan resources and timelines accordingly.