In the years before your organization moved to Google Workspace, it was relatively common practice for users to create unmanaged Google Accounts with their corporate email address (for example, to monitor Analytics, manage AdSense, and collaborate in Docs with other partners who were on Google Workspace).
How do we provision users who previously owned unmanaged Google Accounts without having to lose access to their data?
The correct approach to provision users who previously owned unmanaged Google Accounts without losing access to their data is to use the Transfer Tool for Unmanaged Accounts. This tool allows you to send requests to the former users to transfer their account to your domain as a managed account. This way, the users will retain access to their data, and their accounts will become managed under your organization.
https://support.google.com/a/answer/11112794?hl=en https://support.google.com/a/answer/6178640
C is the correct answer
C is correct