52. What does the author say is manufacturers' new marketing strategy?
- A. Stressing the absence of certain elements in their products.
- B. Articulating the unique nutritional value of their products.
- C. Supplying detailed information of their products.
- D. Designing transparent labels for their products.
答案：A
答案句：But the marketing strategy in response to this consumer demand has gone beyond articulating what is in a product, to labeling what is NOT in the food.
参考译文：但是，为回应这种消费者需求而采取的营销策略已经超越了说明产品中含有什么，转而标注食品中不含什么。
定位线索：题干“manufacturers' new marketing strategy”→答案句取自第2段“the marketing strategy...has gone beyond...to labeling what is NOT in the food”；文中“labeling what is NOT in the food”对应选项A“Stressing the absence of certain elements in their products”。
解析：答案句明确指出新策略从说明产品成分转向标注不含什么，即强调某些成分的缺失，与选项A一致。选项B、C、D描述的是传统策略，与原文“gone beyond”不符，属于偷换概念。