What term describes the flexibility of certain tasks that must be completed on a project but do not have a strict deadline?

The term that best describes the flexibility of certain tasks that must be completed on a project but do not have a strict deadline is float time. Float time, also known as slack time, refers to the amount of time that a task can be delayed without causing a delay to the project's overall completion. This concept is crucial for project management as it allows for adjustments in scheduling without impacting the project's critical path.

When tasks have float time, project managers can prioritize certain activities while still being able to accommodate delays in others without jeopardizing the final delivery date. Recognizing float time enables effective resource allocation and helps in managing uncertainties that may arise during the project's lifecycle.

In contrast, options like deadline flexibility and task flexibility do not specifically capture the project management terminology related to scheduling and task dependencies, while extended time implies a longer timeframe, which does not convey the specific concept of tasks having leeway within a set schedule.