Explanation
According to the Create a customer project from a demand document, when creating a project from demand, the resource plan and the cost plan are moved and copied upon project creation. The resource plan defines the resources required for the project, and the cost plan defines the estimated and actual costs for the project. The other options are not correct, as they are not related records that are moved and copied upon project creation.
The change requests, the idea, and the demand are not moved or copied to the project, but they are linked to the project as references. The assessment is not a record that is associated with the project, but with the demand.