Your landing page must include your privacy banner to let your customers know that you take their privacy seriously.

Once enabled, where will the full text of your privacy policy be stored?

A. on your organization’s private website, with the login information needed to access it
B. on any publicly-available website, with the URL listed in the Event Management Settings
C. on your organization’s website, with the URL listed on the Default Configuration Set

D. on any publicly-available website, with the URL listed in the Landing Page Configuration Set

References:
https://docs.microsoft.com/en-gb/dynamics365/customer-engagement/marketing/marketing-settings