NTO has scenario of a journey for "post-purchasing communication": which re-entry setting is correct?

A customer is developing a new eCommerce section of their website and plans to leverage transactional data in customer journeys.
Which two Marketing Cloud features will support this effort?
Choose 2 answers

By which three standard methods could contacts be injected into a journey? Choose 3 answers

Northern Trail Outfitters sends a monthly newsletter to top shareholders and has a business need to handle replies to their CEO. They have a Reply Mail Management (RMM) Configuration in their setup, and the team would like the reply email address to appear as a real email address in the subscriber's mail client when replying. This email address seen in the email client for reply should not be the actual CEO's email address.
How should they ensure this is accomplished?

Northern Trail Outfitters wants to control what content is available to certain users and business units. They also want to control what is allowed to be edited and ensure those edited are reviewed prior to being changed.
What should be implemented to achieve these goals?