Which of the following areas is most likely to form metamorphic rocks such as gneiss and schist? a.
a site deep underground
b.
a sea floor
c.
a site covered by a glacier
d.
a windblown desert

Ihaven't done that yet, so no idea,but this is not the right place to ask

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