Answer:
A. Schedule planning and budget planning.
Step-by-step explanation:
Work Breakdown Structure (WBS) is a tool that the project manager uses to progressively divide deliverables into smaller pieces. It gives framework that can be used as a basis for further planning activities. They are displayed in an indented outline format.
Simply stated, Work Breakdown Structure (WBS) in project management is the laser-focused breakdown of a project into smaller components in order to make the project successful.
Hence, the WBS is an input for schedule planning and budget planning.
This ultimately implies that, the WBS is the starting place for schedule planning and budget (financial) planning, and as a result, it serves as the critical input to various deliverables and processes in project management.