In project schedule management, the maximum time an activity can be delayed without delaying the early start of any immediate successor is:

Explanation

• Free Float (Free Slack) is the maximum time a project activity can be delayed without altering the early start date of any subsequent task.
• Total Float, in contrast, is the delay allowed without extending the overall project completion deadline.
• Total Float = Late Start – Early Start (or Late Finish – Early Finish). Free Float is always less than or equal to Total Float.