D is a run on sentence. There is a comma splice, which means that the writer used a comma to join sentences where there should not be a comma. To make D a correct sentence, it would be best to put a period where the comma is.
It is a disgrace when people refuse to practice pollution control. Air pollution continues to worsen.
Hope that helps!
This seems like a complete thought
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Answer: C) Organic farming preserves soil health and yields more nutrient-rich foods than conventional farming.
Explanation: The article makes a few comparisons that develop an analysis of how each method is different from one another. However, it mainly emphasizes the essential characteristic of Organic farming, which is how soil's natural components and conditions provide a richer harvest than conventional farming does.
