We need to boil this long argument down to more manageable pieces if we're going to be able to recognize the principles in the answer choices.
The important points are these:
1. industrialists address problems by simplifying them...
2. in farming, these usually lead to oversimplification (a bad thing)
3. example: water retention and drainage
4. more farming problems are created than solved when ag is the domain of the industrialist rather than the farmer.
(A) Water drainage/retention is but one example given, not the "most important."
(B) Yes. The industrialists, whose approach is "oversimplification" should stay away from farming. The reasonable inference is that farming is best left un-simplified.
(C) No, just better than the industrialists, most of the time.
(D) Tempting choice. The important distinction to remember is that "industrialists" cause more problems than they solve when they enter the agricultural domain. This is different than saying "industrial solutions" should "never be sought."
(E) Not "fundamentally flawed" -- just not well-applied to farming.
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