Magma that does not reach the surface is called
intrusive rock
extrusive rock
metamorphic rock
imbricated rock

the answer is metamorphic rock

the answer that the other person put is incorrect

true. earthquakes are felt whenever there is a slip around a fault in the rocks below the earth. this reorientation of faults create sesmic waves and is known as earthquake, the severity of which is measured in richter scale. these are more prominent in hilly regions as the rocks usually form faults to balance the pressures on it.

answer conditional instability;