Hey there,
I love to skate, It's what I do all the time, so I believe I can understand this question more than anyone :) Your correct answer would be a group of teenage boys. This would be your answer because the other options seem like they prohibit skating, this would make more sense because the majority of teen skate more than adults do. Even though there are many pro-skates. But your correct answer would be a group of teenage boys.
~Jurgen
