Why are the veins under my tongue black? I’m still a teenager so it shouldn’t be the stuff my grandma has

It's normal! they just become more dilated in the area where the tongue is, so it appears black.

I’m going to guess these are the choices: a) recreational skiing developed in the mid-19th century b) it was originally invented as a way of getting from place to place in snowy regions c) downhill skiing is currently the only common form of the sport d) it mostly evolved from snowshoeing- if that’s the cases then the answer would be c) downhill skiing is currently the only common form of the sport