The most densely populated European nation is the Vatican, located within Rome. It has 800 citizens with them living on a 0.17 miles squared, meaning there are 4,709 citizens per mile squared. This number might seem odd since it's much greater, but as Vatican is smaller than 1 mile, it cannot be compared without it becoming so big.
Answer:
When residents of several Southern California cities were asked to draw maps of their residential areas, middle- and upper-income individuals included more details and area, while lower-income individuals included fewer details and area.
I think that you can say D.
Hope that this helps you =)
Hydropower, wind power, solar power.