The correct answer to this question is Hair. This is the correct spelling because it matches the description of the provided statement" The stuff on the top of your head." Hair is the follicles that come from your head. This is what makes mammals stand out from the rest of living creatures because all mammals have hair.
Not only can hair come from your head, but it can also be found on a person's arm, legs, and genitals. In regards to nose on ahead, there are many different hair types including curly, straight, and thin. The other answer, hare, are animals.