Answer:
A. height above sea level
Step-by-step explanation:
Topography is a science that studies all features present on the surface of a territory, such as the relief and other factors inherent to a given land region. Can be defined as "height above sea level".
Topography was born in line with cartography (map study), with the need for people to specify the conditions and structure of the paths described in the geographical charts of the time.
Topography is concerned with analyzing only small or medium geographic regions (approximately 80 km in surface), and large-scale studies (such as whole planets) are called geodesy.