The ratio of volumetric strain to volumetric stress is called

Explanation

The ratio of volumetric strain to volumetric stress is called c. Bulk's modulus.Here's why:Volumetric strain: It represents the relative change in volume of a material due to applied pressure. It is calculated as the change in volume divided by the original volume.Volumetric stress: It represents the pressure applied to a material, which causes a change in its volume.Bulk modulus (B) is defined as the ratio of volumetric stress (ΔP) to the volumetric strain (ΔV/V):B = ΔP / (ΔV/V)Therefore, Bulk's modulus is the material property that relates the relative change in volume to the applied pressure, making it the correct answer among the options.Young's modulus: It measures the stiffness of a material under tensile or compressive stress (along a single axis), not volumetric stress.Shear modulus: It measures the resistance of a material to deformation under shearing forces, not volumetric stress.Compressibility: This is the reciprocal of Bulk's modulus, not the ratio itself.