Northern Trail Outfitter (NTO) wants to use Marketing Cloud's Subscription Center to allow subscribers to control which types of emails do NOT want to receive. NTO's audiences are contained in data extensions.
Which object should be used?

The data team at Northern Trail Outfitters wants to send a daily report of all subscribers emailed in the last 24 hours to their Enhanced FTP Export folder. The file should contain unique email addresses.
At a minimum, which activities should be configured in Automation Studio to meet their requirements?

Northern TV-ail Outfitters (NTO) sent a targeted email to 1,000 customers, but the actual number series was 10% less. In troubleshooting the issue, NTO noticed that 100 email addresses contained a typo of "gmail.com instead of "gmail.com".
Which Marketing Cloud feature prevented emails from being sent to an invalid domain?

Northern trail Outfitters is hiring a third-party vendor to host a web page tied to a promotional sweepstake. The marketing manager would like an email sent from journey as soon as the subscriber submits the form.
What should be used to enter this subscriber into a journey?

Northern Trail Outfitters imports a daily feed of active customers into a data extension. A customer is only included in the daily feed if they meet the criteria to remain active.
Which import option should be used to ensure the data extension only contains currently active customers?