A Marketing Manager meets a new customer at an event. How can they create that new customer as a prospect in Pardot?

You want to track prospects that click on a banner ad. What do you use?

A marketer wants to create different Pardot lists to correspond with the different stages of the buying cycle. When an Opportunity stage changes in Salesforce. the prospect list membership automatically updates to reflect that m Pardot. example, if an opportunity moves from Negotiations to Closed Won, the prospects associated with that opportunity. Should be removed from the Negotiations list, and added to the Closed won list.
How could the marketer accomplish this?

Which of the following can "unmatch" prospects?