What is the author's attitude toward the claims made by advocates of health foods

单项选择题According to the last paragraph, consumers who believe that organic foods are better than conventionally grown foods are often ______.

单项选择题The author implies that there is cause for concern if consumers with limited incomes buy organic foods instead of conventionally grown foods because ______.

单项选择题According to the first paragraph, which of the following is true about the term organic foods