请大家看一下这道语法题有关句子成分划分.
原题为；
Often the design of a scholarly investigation _____by the question it is addressing.
(A) to affect
(B) affects
(C) affected
(D) will be affected
谓语动词被动.但是我不明白the question it is addressing是什么?是省略that的宾语从句?如果是这个宾语从句怎么还原?并且整句话如何解释,请大家看看.