Northern Trail Outfitters (NTO) has been sending emails for about 10 years. A new marketing manager noticed their deliverabihty continually decreased over the last year. NTO wants to grow their existing subscriber base and increase ROI on email marketing by improving engagement with subscribers.
Which three strategies would improve their email deliverabihty?
Choose 3 answers

A marketer sends an email to a sendable data extension. The data extension has a subscriber relationship that matches Customer_ID on the data extension to Subscriber Key on the All Subscribers List.
What is a true statement regarding the default email send behavior for a pre-existing subscriber?

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?

While testing an email with dynamic content in Content Builder, proofs of five content variations need to be reviewed directly in the inbox of a marketer's quality assurance specialist and the marketing manager. A data extension named 'myTestData' contains only the variations needed.
Which method should be used to accomplish this task?

Northern Trail Outfitters (NTO) sends a hiking newsletter to an audience that has opted to receive messages about hiking. They have noticed in the last six months their open and click rates have been trending lower.
NTO wants to reverse this trend.
How should they improve their engagement rates with unengaged subscribers''