What characterizes a valley?

A valley is typically characterized by its low area relative to the surrounding landscape, often containing a drainage way such as a river or stream that flows through it. This geographical feature is formed by various processes, primarily erosion caused by water or glacial activity. Valleys serve as natural pathways for water, leading to the accumulation of sediments and nurturing ecosystems. In contrast, the other options describe features that do not align with the definition of a valley. A long narrow hilltop would be more representative of a ridge, while a high elevation area refers to a mountain or plateau. An area of flat land with no drainage describes a plain rather than a valley. Thus, the correct identification of a valley as a low area with a drainage way captures its essential characteristics.