I think the question's answer is right, if you look region 2 has a carbon connected to it with 3 hydrogens on it, but every other carbon has just 1 hydrogen coming off it, so it might be that you've got one carbon atom with 5 hydrogens attached to the other carbon atoms next to it and the others each have 2 on the adjoining carbon atoms. I think by 2 peaks it means 2 different peaks, i.e. if they've all got the same environment that would count as one peak. Don't trust me fully on that though, I could easily be wrong.