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Jennifer NordellTreehouse Teacher
Hi there! I would highly suggest you submit a suggestion directly to Support about this quiz and how they might improve it. When you post here, you are addressing (for the most part) other students. Contacting support is your best way to make your voice heard both to improve your own experience and that of other students and in my experience the staff at Treehouse love to receive constructive criticism.
That being said, at least one question in the quiz where "collection" is mentioned refers back to this video where "collection" is mentioned no less than seven times. This is the video immediately preceding the other video referenced by the quiz questions. Also, in the Teacher's Notes accompanying this video is a link to documentation concerning collections.