Correct Answer  Option 1 : shear
Explanation:
Shear strain is defined as the strain accompanying a shearing action. It is the angle in radian measure through which the body gets distorted when subjected to external shearing action.
When a body is under load, it will extend in the direction of the stress (longitudinal strain) and contract in the transverse or lateral direction (lateral strain), in case of longitudinal tensile stress.
 The ratio of change in length to the original length is called the longitudinal strain
 The ratio of change in diameter/breadth to original diameter/breadth is called the lateral strain
 The ratio of lateral strain to longitudinal strain is called the Poisson's ratio

The volumetric strain of a deformed body is defined as the ratio of the change in volume of the body to the deformation to its original volume.