How can you restrict a production from appearing in the Viewer?

Restricting a production from appearing in the Viewer is typically accomplished by managing access through permissions. Setting the Production permission to None effectively denies access to users, preventing them from viewing any content within that production. By doing this, you ensure that the production is entirely invisible to users without the necessary permissions, safeguarding sensitive information or material that should not be accessed.

While other options could relate to adjusting visibility in different contexts, they do not directly serve the same purpose. For instance, removing all user permissions may encompass a broader access control but does not specifically target the production itself. Changing the document format or hiding the document might alter how content is displayed, but they do not fully restrict access as effectively as setting the permission to None does. Thus, the most appropriate method to restrict visibility is through tailored permission settings, as described.