单选题 ______ percent of all cancers could be averted if people ate more fruits, vegetables, and plant-based foods and minimized high-fat, high-calorie edibles.

【正确答案】 A
【答案解析】只要找到原句的出处,就可以判断,如果摄入更多的水果、蔬菜、植物类食物,并减少高脂肪、高热量的食物,30%~40%的癌症病人可以得到预防,所以A是正确答案。