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Fill in the blanks: A customer fills out a form to download an ebook and checks the box asking for further promotional materials. You send a follow-up email asking for confirmation that they want to receive marketing promotional materials. This can be described as ______ and ________.

  • implicit consent, single opt-in
  • implicit consent, double opt-in
  • explicit consent, single opt-in
  • explicit consent, double opt-in

The correct answer is:

  • explicit consent, double opt-in.