GMAT Sentence Correction (SC) | For the farmer who takes care to keep them cool, providing

Thanks for wonderful break up , it gives me more insight on this.

The source of the notes is one of these discussion forums' notes and the right answer is E in fact . But I do not get it fully, why this is the answer?

I believe, the given sentence being a general statement, "are producing" progressive tense won't make sense , so E is correct.