The Project level of the Work Breakdown Structure (WBS) typically includes an explanation of the purpose of the project. The WBS is a hierarchical and deliverable-oriented deconstruction of a project, and at the highest level, it outlines the final deliverable and the project's main objectives, including its purpose. This level sets the stage for all subsequent planning and provides the context in which the project will be executed123.
References: The explanation is based on standard project management practices and the general structure of a WBS as described in project management literature and resources. For specific ASQ documentation, one should refer to the ASQ Certified Manager Of Quality/Organizational Excellence study guide and handbook.

Effective policy deployment, also known as Hoshin Kanri, is a method used in strategic management to ensure that the strategic goals of a company drive progress and action at every level within that company. This typically involves aligning the goals of the company (corporate plan) with the goals of areas and departments, as well as individual employees. Therefore, the element necessary for effective policy deployment is likely to be that area managers must align their area goals with the corporate plan, as this ensures that all parts of the organization are working towards the same objectives.
References: While I can't reference the ASQ handbook directly, the principles of policy deployment are consistent across quality management frameworks. They emphasize the alignment of goals throughout the organization to ensure that everyone is working cohesively towards the company's strategic objectives1.