Answer :
The author should add the sentence, "Manufacturers cannot lawfully label their products organic without proof," following sentence 13. So the correct option is A.
The paragraph compares and contrasts natural and organic items. It says that organic products are produced utilizing organic farming practices, with little to no synthetic fertilizer and no pesticides. The U.S. Department of Agriculture must audit organic farmers' farms in order to verify their organic designation.
Natural foods, on the other hand, ought to be unprocessed and additive-free. With the exception of items made from meat and poultry, there are no restrictions governing the use of the term "natural" in contrast to organic products.
As a result, some producers may trick customers into thinking that their products are natural. even if they have chemicals and preservatives created in laboratories. Given this information, the phrase "Manufacturers cannot lawfully label their products organic without proof" should be inserted after sentence 13.
This is due to the fact that paragraph 13 discusses organic peanut butter, which may contain peanuts that were farmed organically but may have undergone extensive processing during production. The reader would understand that manufacturers must offer documentation before labeling their products as organic if the language following sentence 13 was added. So the correct option is A.
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The answer is (C) sentence 6. It makes the most sense:
Farmers use minimal pesticides and no synthetic fertilizer. Manufacturers cannot lawfully label their products organic without proof. Therefor, farmers who use organic methods to grow their crops must have their farms inspected by the U.S. Department of Agriculture.
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