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.

In meteorology, a  cloud  is an aerosol consisting of a visible mass of minute liquid droplets, frozen crystals, or other particles suspended in the atmosphere of a planetary body. nephology is the science of  clouds, which is undertaken in the  cloud  physics branch of meteorology.cirrus clouds  usually describe clouds high in the atmosphere that can include wispy clouds, typically with ice crystals. variations include cirrus, cirrocumulus and cirrostratus as defined by the cloud's position in the atmosphere.layered stratus clouds  have both flat tops and bases, and can appear as if they take up the whole sky, stretching from horizon to horizon. other combinations and variations include stratus, stratocumulus, nimbostratus and altostratus.cumulus clouds  often pile up in multiple layers of the atmosphere, representing clouds that develop vertically. cumulus clouds often look like pillars with anvil-type tops or columns of clouds stacked vertically. variations include cumulus, cumulus-congestus, cumulonimbus and altocumulus.