What happens to an activity if its total float is greater than zero?

When an activity has a total float greater than zero, it indicates that there is some flexibility in its schedule. This means that the activity can be delayed for a certain amount of time without causing any impact on the overall project timeline or its completion date. Total float, or slack, represents the amount of time that the task can be postponed without delaying subsequent tasks or the overall project finish.

In project management, identifying activities with total float is crucial for effective resource allocation and scheduling. It allows project managers to prioritize tasks and make informed decisions about which activities can be rescheduled or delayed if needed, without jeopardizing the project’s success.

The other options reflect different scenarios: an activity on the critical path has zero float and cannot be delayed; completing activities immediately is not necessary if there is float; and cancellation of an activity does not relate to the concept of total float. Understanding total float is vital for effective project management and maintaining the project schedule efficiently.