Answer:
Part of this border follows a natural boundary.
Explanation:
The answer is this one because Its a natural line between texas and Mexico and there are no mountains
I think the answer is D:all of the above.
When they are all close, they are called clusters
<span>a reference point for measuring elevation</span>
Consisting of Lakes<span> Superior, Michigan, Huron (or Michigan–Huron), Erie, and Ontario, they form the </span>largest group of freshwater lakes<span> on </span>Earth<span>, containing 21% of the </span>world's<span> surface </span>fresh water<span> by volume.
Hope This Helps!</span>