Answer:
Math
Explanation:
Sadly this is something to ask the math category. I'm sorry, I know this isnt helpful.
C is the answer
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Have a label warning of this on it. Hope this helps!
Rift Valley
A rift valley is a lowland region that forms where Earth's tectonic plates move apart, or rift. ...
Tectonic plates are huge, rocky slabs of Earth's lithosphere—its crust and upper mantle. ...
Many rift valleys are part of “triple junctions,” a type of divergent boundary where three tectonic plates meet at about 120° angles.