求助：og18 语法分册 258 题的疑惑

西瓜鸡蛋

Certain pesticides can become ineffective if used repeatedly in the same place: one reason is suggested by the finding that there are much larger populations of pesticide-degrading microbes in soils with a relatively long history of pesticide use than in soils that are free of such chemicals.
A Certain pesticides can become ineffective if used repeatedly in the same place: one reason is suggested by the finding that there are much larger populations of pesticide-degrading microbes in soils with a relatively long history of pesticide use than in soils that are free of such chemicals.
B If used repeatedly in the same place, one reason that certain pesticides can become ineffective is suggested by the finding that there are much larger populations of pesticide-degrading microbes in soils with a relatively long history of pesticide use than in soils that are free of such chemicals.
C If used repeatedly in the same place, one reason certain pesticides can become ineffective is suggested by the finding that much larger populations of pesticide-degrading microbes are found in soils with a relatively long history of pesticide use than those that are free of such chemicals.
D The finding that there are much larger populations of pesticide-degrading microbes in soils with a relatively long history of pesticide use than in soils that are free of such chemicals is suggestive of one reason, if used repeatedly in the same place, certain pesticides can become ineffective.
E The finding of much larger populations of pesticide-degrading microbes in soils with a relatively long history of pesticide use than in those that are free of such chemicals suggests one reason certain pesticides can become ineffective if used repeatedly in the same place.

早上看到这道题的E选项觉得有些疑惑，这里的具体错误有什么呢？
跟句子里面的in those that...的指代有关系吗？但是我觉得those的指代似乎没有什么问题呀，除此之外不知道哪里还有错呢？
求各位NN指点迷津~~

LLEOE

in those 指代in soils，后边that引导定语从句，而文中比较的是用了杀虫剂的土地中微生物的数量和没用杀虫剂的土地中的微生物的数量，所以我觉得those还是应该指代populations of pesticide-degrading microbes，也就是改成than those in soils that。

krystalchenkkk

我觉得E里面比较对象不清晰，those不能明确指代到soils，前面的名词复数太多最好还是重复一下soils。
此外the finding of和the finding that也有区别，一个强调of后面的名词，一个强调整个动作，LZ你感受一下。

西瓜鸡蛋

感谢~之前完全没想到到finding后面的that和of呀
看来对这个知识点还是不太熟

西瓜鸡蛋

突然发现，好像ron说过？？会不会e中的...of...of这种结构也比较累赘呀

Dandan1218

such chemicals suggests one reason certain pesticides can become ineffective if used repeatedly in the same place.
这是两个单独的句子，没有连词衔接，这才是明显的语法错误
中间那些东西全部都是介宾短语，不用管。主句是 The finding suggests.....