Question ID:PT59 S2 Q10 Passage:Chemical fertilizers not only create potential health hazards, they also destroy earthworms, which are highly beneficial to soil. For this reason alone the use of chemical fertilizers should be avoided. The castings earthworms leave behind are much richer than the soil they ingest, thus making a garden rich in earthworms much more fertile than a garden without them. Stem:Which one of the following most accurately expresses the main conclusion of the argument? Correct Answer Choice:DChoice A:Earthworms are highly beneficial to soil. Choice B:Chemical fertilizers destroy earthworms. Choice C:The castings that earthworms leave behind are much richer than the soil they ingest. Choice D:The use of chemical fertilizers should be avoided. Choice E:A garden rich in earthworms is much more fertile than a garden that is devoid of earthworms.