If the water content of a fully saturated soil mass is 100%, then the voids ratio of the sample is A. less than specific gravity of soil B. equal to specific gravity of soil C. greater than specific gravity of soil D. independent of specific gravity of soil

The correct answer is: D. independent of specific gravity of soil.

The voids ratio is defined as the ratio of the volume of voids to the volume of solids in a soil mass. The specific gravity of soil is defined as the ratio of the density of soil solids to the density of water.

The voids ratio of a fully saturated soil mass is independent of the specific gravity of soil because the water content of a fully saturated soil mass is 100%. This means that all of the voids in the soil mass are filled with water. The specific gravity of soil solids does not affect the volume of water that can be held in the voids of a soil mass.

To explain each option in brief:

• Option A is incorrect because the voids ratio of a fully saturated soil mass is not less than the specific gravity of soil.
• Option B is incorrect because the voids ratio of a fully saturated soil mass is not equal to the specific gravity of soil.
• Option C is incorrect because the voids ratio of a fully saturated soil mass is not greater than the specific gravity of soil.
• Option D is correct because the voids ratio of a fully saturated soil mass is independent of the specific gravity of soil.