Day 151 Benton City residents have adopted healthier lifestyles

Benton City residents have adopted healthier lifestyles. A recent survey of city residents shows that the eating habits of city residents conform more closely to government nutritional recommendations than they did ten years ago. During those ten years, local sales of food products containing kiran, a substance that a scientific study has shown reduces cholesterol, have increased fourfold, while sales of sulia, a food rarely eaten by the healthiest residents, have declined dramatically. Because of these positive changes in the eating habits of Benton City residents, we predict that the obesity rate in the city will soon be well below the national average.

Write a response in which you discuss what questions would need to be answered in order to decide whether the prediction and the argument on which it is based are reasonable. Be sure to explain how the answers to these questions would help to evaluate the prediction.

【本题与Day 53、Day 144相似，不同之处在于，本题还可以反驳：饮食习惯更健康了，肥胖率就一定能降低吗？除了饮食，还有哪些因素会导致肥胖？例如：不经常运动锻炼、新陈代谢紊乱、经常处在油烟环境等都会导致肥胖。】

五问：

可参考Day 53的思考路径