Final answer:
The project purpose in the project charter can include prior documents for selecting the project.
Step-by-step explanation:
In a project charter, the project purpose can include prior documents for selecting the project. These prior documents may consist of research, data, and literature that have been examined to choose the project. For example, if a business is considering implementing a new marketing strategy, the project purpose in the project charter may include prior market research reports or case studies that influenced the decision to pursue the project.