What does "declivity" refer to in terms of geography?

"Declivity" specifically refers to a downward slope or decline in terrain. In geographic terms, it describes any area where the elevation decreases in a particular direction, typically indicating a gradual or steep descent. This can be found in various contexts, such as hills, ravines, or the sides of valleys, emphasizing the slope's downward nature. Understanding the term is essential for comprehending geographical features and landscape descriptions. In contrast, the other choices refer to different topographical elements. A steep mountain area denotes an incline rather than a decline, flat land describes level terrain, and a high plateau signifies an elevated flat area, all of which do not align with the definition of "declivity."