A __ must be completed before the next task can begin. a. critical task b. successor task c. predecessor task d. critical path

c. predecessor task<br /><br />A **predecessor task** must be completed before the next task (its successor) can begin. The other options don't fit this definition:<br /><br />* **Critical task:** A task on the critical path, meaning it directly impacts the project's overall duration.<br />* **Successor task:** A task that follows another.<br />* **Critical path:** The longest sequence of tasks in a project, determining the shortest possible project duration.<br />