Im not 100% sure but the best answer I can give is Prokaryotes because they came to be around the time oxygen did as well.
The longmenshan fault is in china. This fault was created when two tectonic plates collided with each other, resulting in the rise of mountains next to the sichuan basin. This fault is most likely a reverse fault.
A reverse fault is a fault that exists in areas that are undergoing compression in which the rock on top of the fault plane is moved upward relative to the rock under the fault plane. A reverse fault is completely different from normal faults and it reduces the faulted section of rock.
D. Cross braces this is the right answer
