If a prospect clicks on a custom redirect after filling out a form, will the prospect's assigned Pardot campaign change?

Arrange the steps to Access a Prospect Record:
A . Select Prospect
B . Mouseover Prospects
C . Click Prospect List

When prospects register via a Pardot form, they will still receive GoToWebinar's reminder and registration emails.

A Pardot administrator wants to export a .csv of prospects that purchased a certain product within the last year.
The product is captured in a Product Name field on the prospect record. The company's product will soon be changing names, therefore they need a one-time export of all prospects that have this specific product currently listed in the Product Name field.
What is the recommended way to identify these prospects to export to .csv?

LenoxSoft's email template designer has been tasked with driving more engagement with the company's email content. They want to use the Click-Through Rate report to see which links prospects clicked.
What insight does this report provide the template designer?