Anursing student is researching which antihistamine drug that elicits its antihistamine effects by selectively binding to peripheral h1 receptors?

a) diphendydramine
b) clemastine
c) brompheniramine
d) desloratadine

1. aspect is nothing really because the answer is right in front of your face

Are you asking about a street map usage  if so here is your answer  a street map for a very limited area could simply be a bit map or a .jpg image.  but a more general map would probably store the streets as vectors.  but you shouldn't assume that there is one way to do it

The answer is d i think