Final answer:
Work packages are critical for planning and scheduling a project as they define the project scope.
Step-by-step explanation:
Work packages
are critical for planning and scheduling a project because they are the level within a work breakdown structure (WBS) that will define
the project scope
. The project scope refers to the specific deliverables, objectives, and tasks that need to be accomplished in order to complete the project successfully. Work packages break down the project into manageable chunks of work, allowing for better estimation of time, resources, and budget. By defining the project scope at the work package level, project managers can ensure that all necessary tasks are included and properly planned for.