The borders that form the basis of the median line principle are commonly connected with bodies of water. As a result, option D is right.
That is Mountain Ranges.
The border is something that separates or divides the two places or fronts from the meeting point.
The barrier could be physical, political, social, economic, cultural, or any combination of these. The boundary is defined as an invisible line that delineates the state or territory. The median line is used to define the boundaries of bodies of water such as the ocean, sea, and lake.
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