A project manager reviewing a network diagram notes that a particular activity has zero total float. What does this signify?
The activity has been completed ahead of schedule.
The activity is on the critical path.
The activity has a flexible start date.
The activity requires additional resources to be completed.
In the critical path method, total float (or slack) is the amount of time an activity can be delayed without affecting the project's final completion date. Activities with zero total float are considered critical activities and lie on the project's critical path. Any delay in a critical activity will directly delay the overall project completion date. The other options are incorrect. An activity with zero float does not necessarily require more resources, nor does its status indicate it is ahead of schedule. An activity with a flexible start date would have a positive float value.
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