Exam AWS Certified Cloud Practitioner topic 1 question 649 discussion

D. The organizational administrator has used a service control policy (SCP) to limit the root user permissions.

D. The organizational administrator has used a service control policy (SCP) to limit the root user permissions. When an AWS account is managed by AWS Organizations, the root user of the account has limited permissions to perform actions such as closing the account. The organizational administrator can use a service control policy (SCP) to limit the permissions of the root user and prevent them from performing certain actions, including closing the account. Therefore, if the root user is trying to close an AWS account that is managed by AWS Organizations and the attempt is unsuccessful, it is likely because the organizational administrator has used an SCP to limit the root user's permissions

An SCP restricts permissions for IAM users and roles in member accounts, including the member account's root user.