Final answer:
The PMBOK defines a project as a temporary endeavor undertaken to create a unique product, service, or result.
Step-by-step explanation:
The PMBOK (Project Management Body of Knowledge) defines a project as a temporary endeavor undertaken to create a unique product, service, or result. This means that a project is a temporary effort with a specific goal in mind, such as building a bridge or developing a new software application. It is not a permanent endeavor and the outcome of a project should be something unique and distinct.