请教一道语法题

dedeyuky

请教一道语法题
Until quite recently, American presidents lived in a world in which the public and private realms of their lives were largely separate, and the press cooperated in maintaining the distinction, and Americans judged national leaders without receiving, or expecting, intimate information about them.
(A) and the press cooperated in maintaining the distinction, and
(B) where the press cooperated in maintaining the distinction, and where
(C) for the press cooperated to maintain the distinction and
(D) the press cooperated to maintain the distinction, for
(E) in which the press cooperated in maintaining the distinction, and in which

答案选E。希望NN们能帮我解释很翻译一下~谢谢！！

syjsyj

3个in which 从句并列
美国总统生活在这样一个世界里：在一个公开及私人生活领域分开的世界；在一个通过新闻界合作来维持这种区分的世界；在一个美国民众不通过接收或期望关于他们的私密信息来判断国家领导人的世界。