Answer:
Option (3)
Explanation:
The elasticity property of rock describes how a rock that is subjected to stress undergoes bending and again comes back to its original position. In nature, most of the rocks are non-elastic as they undergo deformation due to the stress acting on them. So the rocks are not always perfectly elastic.
According to Hooke's law, in case of a comparatively small deformations of an object, the displacement that occurs on the rocks or the deformation size that occurs is directly proportional to the amount of load that undergoes deformation.
Hence, the correct answer is option (3).