What did the review of global data reveal?

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问题 What did the review of global data reveal?
  
(9)Access to clean water and soap not only improves hygiene but may boost growth in young children, research suggests. A review of global data found evidence of a small increase in height—about 0. 5cm—in under fives living in households with good sanitation. The studies took place in Bangladesh, Ethiopia, Nigeria, Chile, Guatemala, Pakistan, Nepal, South Africa, Kenya and Cambodia.
    Dr. Alan Dangour, a public health nutritionist who led the studies, said providing clean water, sanitation and hygiene is an effective way to reduce deaths from symptoms such as diarrhea.(10)"What we’ve found by bringing together all of the evidence for the first time is that there is a suggestion that these interventions improve the growth of children and that’s very important," he told BBC News. He said there is a clear link between dirty water, diarrhea and poor growth outcomes, because repeated illnesses in early childhood can affect growth.

选项 A、examine links between sanitation and death from illness
B、look into factors affecting the growth of children
C、investigate how to tackle symptoms like diarrhea
D、review and compare conditions in different countries

答案B

解析 细节理解题。新闻中提到“What we’ve found by bringing together all of the evidence for the first time is thatthere is a suggestion that these interventions improve the growth of children and that’s very important,”he toldBBC News.也就是说,Alan Dangour博士的研究是卫生条件对儿童身高的影响,故答案为[B]。
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