What must be true for a Salesforce Opportunity to sync to Pardot?

An engagement studio program is created with an Email Send action step immediately followed by an Email Open trigger step witha 3 day wait. A prospect is sent the email and progresses to the Email Open trigger. On day 2, the prospect opens the email.
How would the prospect progress through the trigger step?

LenoxSoft conducted a database clean-up project and mass updated their prospects. A few of their prospects were updated incorrectly and they need to investigate what happened.
What three data points can be found in the prospect's Audits tab to help determine what updates were made?
Choose 3 answers

The VP of Marketing wants to see all automation rules and engagement studio programs that a prospect has been a member of. Where should the VP of Marketing look to find this information?

A prospect with a Pardot score over 100 can view and opt out of a list on the Pardot Email Preference Center.
The following month, the prospect's score falls below 100, so they are removed from the list and can no longer view that list on the Email Preference Center.
Which two characteristics must be true of that list?
Choose 2 answers