Final answer:
To display the Table of Contents in an ArcGIS map document, the user should choose the View menu and then select the Table of Contents option.
Step-by-step explanation:
To add the Table of Contents back to a map document in ArcGIS, the user should choose the View menu. Once the View menu is open, the user can select the Table of Contents option to add it back to their map document interface. This feature in the software allows users to easily manage layers and their properties within the document, making it a crucial part of the user interface for effective map creation and editing in ArcGIS.