A customer wants to capture and categorize email Not Sent events and begin identifying trends. They want to keep the data in Marketing Cloud and run queries against the dataset. The customer created a data extension to receive the information.
Which order of Automation Studio activities should be recommended?

A marketer sends an email to a sendable data extension that contains a Customer_ID field with a numeric data type that relates to the Subscriber Key in All Subscribers as a Send Relationship. What is a true statement about the email send behavior for any subscriber who currently does NOT exist in All Subscribers? (Choose 2)

A file is received daily from a data provider to the account FTP. This file needs to be imported into the Marketing Cloud as soon as it arrives. The arrival time of this file varies by several hours day to day. What tool should be used to accomplish this?

Northern Train Outfitters (NTO) finds 57% of its subscribers read emails on smartphones. Because of this, NTO wants to enhance its email viewing experience by thinking "mobile first". NTO has the resources to write the HTML and CSS Code needed to create responsively designed emails. Which option would add the code that was created outside of the Salesforce Marketing Cloud to the email?

What can a marketer do to enhance a Welcome Series campaign? (Choose 2)