Identify each term in List I

We match each description with the correct physical quantity.

A. "A force that restores an elastic body of unit area to its original state"

This is the definition of stress: restoring force per unit area.

So, $A \to \text{Stress} = III$

B. "Two equal and opposite forces parallel to opposite faces"

Equal and opposite tangential (parallel) forces on opposite faces produce shear deformation. The संबंधित modulus is shear modulus.

So, $B \to IV$

C. "Forces perpendicular everywhere to the surface per unit area same everywhere"

This describes uniform normal pressure acting throughout the surface, producing change in volume. The corresponding modulus is bulk modulus.

So, $C \to I$

D. "Two equal and opposite forces perpendicular to opposite faces"

This produces longitudinal deformation (extension/compression), associated with Young's modulus.

So, $D \to II$

Final matching

$A-III,\quad B-IV,\quad C-I,\quad D-II$

Compare with options

This corresponds to Option B.

Comparison with stored answer

Stored correct answer = B.

My derived answer also = B.

Hence, the stored answer is correct.