Martha bought blueberries in Minnesota that contained a USDA Organic Certification sticker. The blueberries were grown using gen
etically modified organisms. The blueberries were grown using organic fertilizer in a greenhouse. The blueberries were grown using practices encouraging ecological balance. The blueberries were grown using experimental practices like incorporating biosolids.
The correct answer to this question is that the blueberries were grown using organic fertilizer in a greenhouse. let me know if you have any further questions :)