It took one year your welcome
The answer is D. The crust.
We’re standing on the crust. This is the outermost layer.
Answer:
I believe that it is a dormant volcano, I hope this answer helps.
The earth's crust is very important to human beings not only because they live in it but because of the socio-economic benefits it offers them. ... Some of these less dense rocks, such as granite, are common in the continental crust but rare to absent in the oceanic crust. Both the continental and oceanic crust mantle.

subtract 8 from both sides leaving

combine -2x+-8x =-10x

divide both sides by ten