Read the following scenarios. Then, select the scenario that is least likely to produce an earthquake.


A
A volcano suddenly erupts. The magma exerts pressure on the rock surrounding the volcano and causes a break.

B
Seismic waves are moving in various directions. These waves cause the area around the waves to move up and down and back and forth.

C
A large piece of rock breaks off a mountain. It rolls down the side of the mountain in a destructive path.

D
A piece of rock along a fault line abruptly shifts. This causes the ground to move suddenly.