A developer is managing the data model programmatically and needs to access Attribute Group schema via the API. Which API should the developer use?

Certification Aid sends an email to a newly imported List with Subscribers who have no associated Subscriber Key. Which value will become the Contact Key? Choose 1.

A developer receives a request for tracking data for alt sends associated with a specific JoblD. The developer needs to see Sends, Opens, Clicks, and Bounces.
Which two activities could the developer use? Choose 2 answers

Northtrn Trail Outfitters has set up their North American business unit to unsubscribe at the business unit level.
Which dataview would they query to identify all subscribers who are unsubscribed from that Business Unit?

A developer wants to create a JavaScript Web Token using a key from Key Management.
What function should the developer use?