Context: I rode for what seemed like a long time , getting lost several times in the most confusing trail system you could imagine that would probably look like spaghetti from an aerial view . Eventually I saw some other people walking a dog into one of the trails I was on and I stopped to get my bearings . They asked me " When did they change the park rules ? "

Question: What were they using to ride the trail ?
Options:
0. A skateboard .
1. A scooter .
2. A bicycle .
3. None of the above choices .
Answer: 2