Which of the following is not likely to appear on a map compass rose, scale, latitude lines, legen, or horizon?

The question is asking to choose among the following given choices that is not likely to appear on a map and in my further analysis and understanding, I would say that the answer would be the Horizon. I hope you are satisfied with my answer and feel free to ask for more if you have question and suggestion

Did you know it's illegal to own only one guinea pig in switzerland?   : )