What report can you run to confirm a user's access to a target instance as a member of a security group?

To confirm a user's access to a target instance as a member of a security group, running the report that allows you to view security groups for the user provides the necessary information. This report outlines all the security groups to which the user belongs, thereby illustrating their permissions and access rights to various elements within the instance.

By examining the security groups associated with an individual user, you can determine if they have the required permissions to access specific functionalities or data within the target instance. This is crucial for ensuring that users have the appropriate access levels aligned with their roles and responsibilities.

The other options do relate to security in Workday, but they do not specifically confirm user access through their membership in security groups. Therefore, viewing the security groups for the user directly addresses the inquiry regarding access verification.