请教一道往年真题

miles_wei

     The 435 seats in the United States House of Representatives are apportioned to the states on the basis of their populations ----- by a national census.

        (A) in determination
        (B) was determined
        (C) determine
        (D) as determined

    我知道A、B和C都不对，但不知D何以对，请高手教我，不胜感激！

friend_friend

as后面省略了it is