What are the following food types needed for: •carbohydrates. •fats. •vitamins. •proteins.

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 correct answer is "b"

The answer is one amu.