As the human population increases the demand of resources will also increase . As we all know that it takes million of years to replenish resources. so if human will use it continuously it will be wipe out from the earth and there are no resources left for future generation. And for this prblem Sustainable is setup by the government..
I believe the correct answer from the choices listed above is option B. It is sand that is the most permeable. It can be proved by the value of the <span>Permeability variation where send has the highest value of 5.0. Hope this answers the question. Have a nice day.</span>