Question

an ad for a weight - loss supplement claims that people who use the supplement will lose 20 pounds in one month. this is based on a study conducted by the company. a statement in the fine print explains that the claims have not been evaluated by the food and drug administration (fda). which concern does this advertising raise? if the supplement has not been evaluated by the fda, it might not be safe. claims that are tested by many companies might still be biased. claims that show the dramatic results of the supplement cannot produce those results. claims that are tested only by the company selling the supplement are probably false.

Explanation:

广告中减肥补充剂的效果由销售公司自己测试，存在利益关联，可能导致结果有偏差。其他选项中，A选项说的是未被FDA评估可能不安全，题干重点是测试主体问题；B选项说的是被许多公司测试仍可能有偏差，而本题是仅被销售公司测试；C选项说声称有戏剧性效果但不能产生，题干未提及不能产生效果，只是测试主体问题。

Answer:

Claims that are tested only by the company selling the supplement are probably false.