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US residents can opt out of "sales" of personal data.
Choosing the right answer is not enough.
There are TEN questions in total. All of the questions have more than one right answer (duh) so choose carefully and think before you click – you might find it useful to keep a running total in your head as you go along. Can you get a perfect 100?
Kelly Oakes is science editor for BuzzFeed and is based in London.
Contact Kelly Oakes at kelly.oakes@buzzfeed.com.
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