Which of the following is NOT a valid view for assignment groups accessible to users?

The correct reasoning for identifying the option that is not a valid view for assignment groups accessible to users revolves around the hierarchical nature of domain visibility in many systems. In most cases, users can access assignment groups based on their membership in specific domains, and these options typically relate to the relationship between parent and child domains.

Child domains refer to domains that are created under a parent domain in a hierarchical structure, allowing users in those child domains to access relevant assignment groups. Contained domains also provide a means for users to view groups that fall under a specific domain containment structure. Visible domains by group membership allow users to see groups to which they belong, based on their role or membership within the organization.

On the other hand, the parent domain typically does not function in a way that it directly grants access to assignment groups for users. Instead, access is more focused on either the specific child domains they are part of or the context of their group membership. This leads to the understanding that assignment visibility, in this respect, is not aligned with the concept of parent domains having direct visibility access. Thus, the choice that does not accurately represent a valid view for users regarding assignment groups is the one related to parent domains.