How can a subscriber update their profile attributes?

A marketer from NTO wants to share multiple assets in content builder for a campaign with another business unit in their account, how should do marketer share these assets?

As part of a daily shipping notification automation, Northern Trail Outfitters needs to join data from the Shipping data extension and the Purchase data extension.
What activity is designed to address this scenario?

The marketing team at a bank needs to receive a file of all subscribers who were sent payment reminder emails and opened them each week. The file needs to be encrypted and placed on the bank's external SFTP.
How should the scheduled automation be configured to achieve this?

When a customer sends to a data extension where are list level unsubscribers recorded? Chose 2