Which term best describes a natural landform?

The term "physical feature" is the most accurate descriptor for a natural landform because it directly refers to the naturally occurring elements of the Earth's surface, such as mountains, valleys, rivers, and lakes. Physical features are integral components of the landscape and play significant roles in the ecosystem and geography of an area. They are distinguished by their tangible, observable characteristics that can be studied and mapped.

In contrast, "geographical structure" is more general and could refer to both natural and human-made features, thus being less specific to natural landforms. "Environmental aspect" is also broader and encompasses various factors, including climatic and biological elements, rather than solely focusing on physical landforms. Lastly, "land characteristic" may imply properties or qualities of the land but doesn't specifically denote the tangible natural forms found in geography. Thus, "physical feature" effectively captures the essence of natural landforms in a precise manner.