Question

Variations in elevation of a land surface is

Answer 1

relief is your answer so yeah

Answer 2

Variations in elevation of a land surface is relief (or terrain)

Relief also known as terrain is the variations in elevation of a land surface. The relief of an area is the difference in elevation between the highest and lowest dimensions of the area. Relief helps to indicate the direction, height, and angle of slope of many physical geographical features such as plains and mountains in a particular region on the earth surface.