What is the cause of earthquakes, volcanoes, and mountains on Earth?

1) Sinking of the oceanic crust.
2) Convection currents in the mantle.
3) Convection currents in the crust.
4) Movements in the outer core.

where is the picture? ?

for e2020. the answer would be some directions from the mountain range so we can find mt. whitney. to locate which direction is north, you should use a   compass. this would not only find mt. whitney, but also becuase of this long paragraph you would get points because it's not like anyone actually reads your work becuase once they read the first sentence it sounds dumb enough to not read becuase i'm not good at answering this but the answer is compass for your benefit.

for e2020 ; -;