Which statement is true regarding an ordinary user adding themselves to a group?

The correct answer reflects the important principle regarding user permissions in many systems, including those concerning group memberships. Ordinary users typically do not have the ability to add themselves to any group. This restriction is a security measure designed to maintain control over group memberships and the privileges that come with them.

In most systems, group memberships can affect access to certain resources, functionalities, or information. Allowing users to self-add to groups could lead to unauthorized access or confusion about user roles within the organization. As a result, it is generally the responsibility of system administrators or designated personnel to manage group memberships, ensuring that all changes adhere to the organization's security and access policies.

While some systems might allow users to request or propose joining a group, they would generally need explicit approval from an administrator or follow a specific process established by the organization. This helps ensure proper and secure management of user permissions and access rights.