(单选题)

What can be the possible explanation according to the study? ( )

A.Urbanization

B.Young people

C.Both

D.Unknown

参考答案：C

参考解析：

文章第四段提到There's not enough data to definitively say why these urban areas are filled with educated people.可知没有确凿的原因，但是末段提到Increased urbanization isn't the only reason car- eschewing cities see smarter citizens. Young people play a role, too.所以可能的原因就在于城镇化和年轻一代。故本题正确答案选C。

知识点：细节题英语阅读理解通用英语