Which of the following correctly describes an r-strategist?
long life span
slow to mature
little to no care of offspring
large individuals

Ibelieve the answer is c. 

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