In this case, the organization wants to prevent users from selecting print media options for new entries while still displaying historical data in reports. The best way to achieve this is to hide the print choices in the dropdown field. This approach ensures that:

Historical data remains unaffected: Since you are only hiding the options and not removing them, existing records with those print media values will continue to display in reports and other views.

No selection of new print options: By hiding these options, users will no longer be able to select them for new records, effectively preventing any further print media classifications.

Removing the print options (Option B) would delete historical data associated with them, which is not desirable for reporting. Moving them to the end of the list (Option C) doesn't restrict users from selecting them, which does not meet the objective of focusing solely on digital work.

This practice aligns with Adobe Workfront's best practices for managing dropdown fields, where options can be hidden but not removed, thus preserving the integrity of historical data while controlling future input.

For more details, refer to the Custom Fields section in Workfront's documentation, specifically around managing dropdown options and preserving historical data visibility in reports.