Passage 2 Is organic food really better for you? The advantages reported for such food over regular food are now being debated. Supporters of organic food, a term whose meaning differs widely, often claim that such food is safer and more nutritious than others. Although most of these claims are not fully supported or documented by scientific research, the prevalence of relevant reports enhancing such claims makes it difficult for the general public to separate facts from fictions. Therefore, claims that choosing an entirely organic diet prevents or cures some disease or benefits overall health have become extensively publicized and formed the basis of the myths. One thing that most organic food products seem to have in common is that they tend to cost more than regular food products. In many cases, consumers are misguided if they believe organic food products can provide better nutrition and maintain good health than conventionally grown food products. It is becoming a real cause for concern if consumers, especially those with limited incomes, do not trust the regular food products and buy only expensive organic food products instead. 【題組】48. The word “maintain” in the third paragraph is closet in meaning to “____”.
(A) improve (B) preserve (C) monitor (D) restore