What characteristic of a physical feature determines land boundaries?

The characteristic of a physical feature that determines land boundaries is its permanence in the environment. Permanent physical features, such as rivers, mountains, and established landmarks, serve as reliable references for defining property lines. Land boundaries need to be distinct and recognizable over time to avoid disputes and provide clarity in ownership.

Physical features that are not permanent, like trees or seasonal streams, may change due to natural events or human activities, leading to ambiguity in ownership and boundaries. Thus, the permanence of a physical feature assures that the boundaries remain constant and legally enforceable, providing a solid foundation for land use and property rights.

While other options might touch on legitimate aspects of property ownership, such as legal ownership or agreements, they do not directly address the physical characteristics that play a critical role in demarcating land boundaries.