Task ID 3 did not start on time, and no work has been accomplished yet. Evaluate the schedule below: Which of the following is MOST likely the cause?

Predecessors not properly identified would cause sequencing or dependency errors in the schedule, but would not by itself result in zero work if resources were present and available.

A scope change alters deliverables or requirements but would trigger a formal change request process, not simply cause a task to silently fail to start.

A retrospective is an agile ceremony for reflecting on a completed sprint and would not block an individual scheduled task from initiating.

Insufficient resources assigned means no team members or equipment are available to execute the task, directly preventing it from starting on schedule. Without the necessary people or materials assigned, the task remains idle regardless of its scheduled start date. This is the most immediate and concrete reason a task would show zero progress with no start.