Which three elements are required to have a secure token on a Mac?

To have a secure token on a Mac, enabling FileVault is a critical requirement. FileVault is Apple's disk encryption program that encrypts the entire drive, providing a strong layer of security for user data. When FileVault is enabled, it necessitates that user accounts are granted secure tokens, which allow those users to authenticate for unlocking the disk at startup and to manage other encryption features securely.

This process is rooted in the structural security model that macOS employs, where secure tokens are essential for controlling access to encrypted data. Only user accounts that have been granted a secure token can unlock the FileVault-encrypted disk. Thus, enabling FileVault not only enhances data protection but also automates the management of secure tokens for those users, making it the key factor in this scenario.

The other choices involve different security and approval processes that, while important, do not directly relate to the establishment of secure tokens. Changing network settings, approving system extensions, and approving macOS software updates contribute to overall system security but do not impact the configuration or necessity of secure tokens in relation to FileVault encryption.