What information is required when creating a prospect manually?

Which three activities would make a prospect active?
Choose 3 answers

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?

A Pardot user sends out a list email and notices that as a result of the email send, many prospects are now marked as 'Do Not Email'. What metrics in the list email report could help the Pardot user understand how these prospects may have become unmailable?

What information is required when creating a prospect manually?