Which statement has been proven true of children of adolescent parents? (points : 1) they have lower iqs. they are less connected to their parents. they have lower academic performance. they choose not to have children of their own.

They have  lower academic performance. Children of adolescent parents suffer many social, health and economic problems. They are more likely to be premature at birth with high probability of other health problems. They are also said to exhibit low performance at school and on standardized exams.

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