Construction Planning and Management
In the given figure, the network of a project represents

Activity of an excavation which starts at event No. 1 and ends at even No. 2
None of these
Activity of excavation which takes 8 units of time
Activity of an excavation of a footing

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Construction Planning and Management
Total float for any activity is defined as the difference between

Its latest start time and earliest start time
Its earliest finish time and earliest start time for its successor activity
Its latest finish time and earliest start time for its successor activity
Its latest start time and earliest finish time

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