Multifactor authentication strengthens account protection by requiring an additional authentication factor beyond a password. This is especially important for tenancy administrators because their privileges can affect resources and access throughout the tenancy. Oracle’s Security Policy for OCI Console includes an administrator rule requiring members of the Administrators group and users with administrator roles to enroll in MFA and provide an additional factor when signing in. Oracle recommends activating this protection and also supports MFA enforcement for other users. Giving everyone unrestricted policy-management access would undermine access control, while avoiding compartments does not improve administrator authentication. Using highly privileged accounts for routine work also creates unnecessary exposure. Among the listed choices, enforcing MFA is the documented security best practice. Oracle documentation: Security Policy for OCI Console