大全524 新问题

524.
            Ms. Wright tries to get inside Iran to understand how it works, the role it has played in the Middle East and its intricate relationship with the United States,
                which is complex and depends heavily on understanding of the Farsi language.

(A) which is complex and depends

(B) because it is complex and depends

(C) but they are complex and depend

(D) which are complex and depend（E）

(E) a task that is complex and depends

请问这是understand的三个并列的宾语吗 为什么前面两个是句子，后面一个省略了什么

请指教！

顶，同问