Final answer:
Coordinating all planning efforts to create a consistent, coherent document refers to developing the project management plan, a foundational aspect of successful project management.
Step-by-step explanation:
The process that involves coordinating all planning efforts to create a consistent, coherent document is c.) Developing the project management plan. This crucial step in project management includes defining the problem, where the needs of potential customers, competitors, market positions, government regulations, and other constraints such as resources like personnel, time, and budget are identified. A detailed and thorough project management plan sets the foundation for the entire project and anticipates necessary revisions throughout the project’s lifecycle, illustrating the agile nature of moving between planning, revising, editing, and drafting.