Which task constraint ensures that a task is scheduled for a specific three-day window?

The choice of Fixed Dates is accurate because this constraint is specifically designed to lock a task within a predetermined time frame. When a task is assigned Fixed Dates, it indicates that the task must start and finish within a specified set of dates, ensuring it occurs in that specific three-day window. This is particularly useful for tasks that are time-sensitive or dependent on external deadlines.

Using Fixed Dates helps project managers maintain control over the timeline of a project and provides clarity on when resources should be allocated to that task. It creates a sense of urgency and helps ensure that tasks do not extend beyond the defined period.

The other options represent different types of constraints that do not define a strict three-day scheduling window. For example, As Soon As Possible allows a task to start as soon as resources are available but does not restrict it to a specific timeframe. Must Finish On ensures a task is completed by a particular date but does not dictate a start date, and Start No Earlier Than allows a task to start after a certain date, which can extend beyond the three-day window.