Final answer:
Sorting in a project changes the actual data, and this occurs when all of the given conditions are true.
Step-by-step explanation:
The correct answer is d) All of the above.
Sorting in a project refers to rearranging the data in a specific order. In Microsoft Project, when you sort the data, it changes the actual sequence of the data in the project.
When the Permanently renumber resources check box is selected, the resource IDs are changed permanently based on the sorting order. This means that the sorting changes the actual data of the project.
The Multiple Level Undo function allows you to reverse multiple steps. However, disabling it does not change the actual data of the project when sorting.
Saving the project before reversing the sorting does not change the actual data of the project. It only saves the current state of the project.
Therefore, the only instance where sorting changes the actual data of your project is when All of the above conditions are true.