For the art director to only receive email notifications about new proofs or versions, the option "Disabled and Notify recipients about this proof is selected" is the correct choice. This ensures that they are not inundated with notifications about every comment or decision made but are alerted when a new proof or version is uploaded for review.
This approach optimizes the notification settings based on the user's request, providing a more focused and less overwhelming email experience, which is often crucial for roles such as creative directors who manage multiple proofs and versions.