Sensitivity of a soil can be defined as A. percentage of volume change of soil under saturated condition B. ratio of compressive strength of unconfined undisturbed soil to that of soil in a remoulded state C. ratio of volume of voids to volume of solids D. none of the above

The correct answer is B.

Sensitivity is a measure of the change in strength of a soil when it is disturbed. It is defined as the ratio of the unconfined compressive strength of undisturbed soil to that of remolded soil.

Option A is incorrect because it is the percentage of volume change of soil under saturated condition.

Option C is incorrect because it is the ratio of volume of voids to volume of solids.

Option D is incorrect because it is not a valid option.