How are Publication Lists used?

A customer wants to integrate their website with Marketing Cloud so that users can update their marketing communication preferences. The customer has in-house web development resources available and is interested in leveraging tools such as Journey Builder in the future.
What solution should the consultant propose, given the customer's requirements and available resources?

A subscriber asked to be removed from a customer's email list multiple times by replying directly to the customer's marketing message, but continues to receive emails.
Which steps will solve how replies are managed by the application? (Choose three.)

ABC Company has to import a file that will be different every time.
What method should be used?

ABC Company wants to better understand subscriber behavior on their website upon arrival via an email message. A local member of a Marketing Cloud user group mentioned the Web Analytics Connector.
Which benefit is offered by installing the Web Analytics Connector in a Marketing Cloud account? (Choose three.)