About how often is a full moon observed from the Earths surface? A. Every two weeks

B. Once each leap year

C. Once a month

D. Each a week

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

Ithink the answer is c. i’m not sure though i’ll notify you when i have an exact answer!