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.
Erosion. Erosion causes gaps in rock layers after a long period of time.
Ocean currents act like large rivers in the Earth's oceans and help spread Earth's heat and shape climates.
Hope this helps,
Davinia.