A shaded relief map uses different colors to represent elevation. The correct option among all the options given in the question is option "C". The shaded relief map is actually used to show the various high and low elevations of an area.It actually shows mountains and plains in different colors for people to understand.
So to me it looks like that into more of the future more people are born in Urban areas and in the Rural areas it looks like it will slowly go down till there is little to none left.
