An email marketing team has been tasked with building a new email that pulls in personalized content based on customers' preferences. The team has decided to create dynamic rules to accomplish this setup. What are the four elements that are required for the creation of a dynamic content rule?

Northern Trail Outfitters (NTO) has a small catalog of items featured in company emails. The NTO marketingD18912E1457D5D1DDCBD40AB3BF70D5D team manages what images, copy, suggested items, and call-to-action are used with each item in this catalog within a database. This data is saved into a data extension in Marketing Cloud and then called into the emails dynamically.
Each time a change is made to the content, a new, updated file is dropped on NTO's SFTP. A proof email is then sent to business stakeholders for final approval.
Using Automation Studio, how can NTO ensure that the catalog stays up-to-date?

A team wants to import a fife with column names that do not match the fields into a data extension.
What step is needed to align the file data to the field names in the data extension?

TO would like to evaluate which email content customers click most frequently. The email team wants to track click behavior for all linked hero image using the naming convention
"Hero CTA".
What are two method two ensure click behavior on these images is tracked with this naming convention.

A marketing team is using two systems to send emails. The team wants to maintain unsubscribe information between both of the systems. In order to remain compliant, they would like to update Marketing Cloud subscription status weekly based on unsubscribes from the other system.
Which solution should they use to maintain subscriber status?