Answer:
A. features of the natural landscape such as rivers, streams, trees, and boulders that could be used to define the property boundary.
Step-by-step explanation:
The metes and bounds survey system requires natural features such as rivers, streams, trees, and boulders to be used as fixed points to define the property boundaries. These natural features provide a clear and permanent way to identify the boundaries of a piece of property and they were a key component of the metes and bounds survey system.