单选题 Recently, some people are interested in natural foods because ______.

A、 these foods are fresh and sweet
B、 they want to change their eating habits
C、 these foods do not contain chemical additives and have not been affected by chemical fertilizers
D、 they don't like the processed foods

【正确答案】 C

【答案解析】[试题分析] 信息细节题。
[试题详解] 由第一段最后一句话可得知答案。