LenoxSoft wanted to deduct a prospect's score by 100 points if they visited their careers page on the website, what would be the best recommendation to implement?

One of LenoxSoft's goals is to effectively use engagement studio programs to continuously reengage cold leads until they become active. To do so, the marketing team needs to build a list of cold prospects.
What is the optimal use case to segment these prospects?

LenoxSoft finds that prospects are unsubscribing from emails, but they wants to make sure the prospects are intending to unsubscribe from all emails and it isn't a mistake.
What should be implemented?

"How could the prospect field 'Pardot Hard Bounce' be updated so a prospect becomes mailable?

LenoxSoft wants to implement a form to be used in multiple places on their website, including their "Contact Us" page, for prospects to contact their team. To align with their lead generation strategy, they want to ask for additional information upon subsequent form submissions.
How should this be implemented with Pardot?