The number of various educational programs is increasing, important roles have been realized by more and more people.
A. whose
B. where
C. which
D. that
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(答案→)A. whose
B. where
C. which
D. that
解析：句意：各种各样的教育节目正在增加，越来越多的人意识到了教育的重要作用。这个句子包含一个非限制性定语从句，且关系词在从句中作定语，所以用关系代词whose，选A。