Ha. I took the quiz again, living in a city of between 10 - 100K people, and then selected the absolutely most primitive conditions: vegan diet, no running water or electricity, never driving or riding a motor vehicle, never flying, 500 sq foot house, etc - you know, their ideal conditions.
I *still* took up more than one planet: 1.1 planets. I guess it's time to move out of a populated town, eh? This quiz is seriously flawed! (obviousness alert)