You are presented with the quiz "Faulting of rock in Earth 's crust causes what?" 

But you don't know the answer, so you turn to your teacher to ask for hints. He says that "faulting of rock in Earth 's crust causes earthquakes" and "an earthquake is a sudden shaking of the ground". 

So, what's the best answer to the question?


 

  Sudden shaking of the ground.         