Most earthquakes are produced by the rapid release of which kind of energy stored in rock subjected to great forces?
a. kinetic
b. thermal
c. elastic
d. mechanica

The correct answer for the question that is being presented above is this one: "c. elastic." Most earthquakes are produced by the rapid release of 
elastic energy stored in rocks subjected to great forces. The greater the elasticity of the energy, the more it is subjected to great forces.

B) raising the temperature and reducing the volume of the gas.|-/ 

Magma  is composed of molten rock and is  stored  in the earth's crust. lava is  magma  that reaches the surface of our planet through a volcano vent.