The popularity of organic foods can be traced to all of the following EXCEPT _____.

* Hướng dẫn giải

Dẫn chứng: The popularity of organic foods can be traced to many people’s nostalgia for a simpler, more pioneer-like life style. And many people believe that organic foods are safer than foods produced on a large scale by traditional methods. Many people also believe that these organic foods contain more and better nutrients than conventional food.