Which of the following is required for zero-touch enrollment to work on a registered device?

For zero-touch enrollment to work, a zero-touch configuration must be applied to the device in the zero-touch portal. This configuration specifies the EMM (Enterprise Mobility Management) solution and enrollment details the device will use upon first boot. Without a configuration, the device doesn't know how to enroll. A "Zero-touch admin account" is used to access the portal and manage configurations, but it's not directly on the device. A "Vendor account" is too vague and not a specific zero-touch requirement. A "Managed Google Play Account" is part of the enrollment process for some EMMs, but the fundamental requirement for zero-touch functionality is the pre-assigned configuration.