(B)pickups and sport utility vehicles pose greater risks on the road than do cars, judging from safety hazards, an association of large insurance companies concluded
(C)an association of large insurance companies concluded, judging from safety hazards,that pickups and sport utility vehicles pose greater risks on the road than do cars.
(D)Judging from safety hazards,an association of large insurance companies concluded that pickups and sport utility vehicles pose greater risks on the road than do cars.
(E)Pickups and sport utility vehicles pose greater risks on the road than do cars, an association of large insurance companies concluded,judging from safety hazards.
答案是(D)，我對答案沒有問題。
但是想請問答案(C)在解答中的解釋：將片語judging from safety hazards 插在concluded跟that的中間，造成句子結構的分裂。
我記得有三種緊密不可分的結構，如果被隔開會造成句子分裂：
1. to + V
2. vt + O.
3. Aux + V
以第2種情況來看，是說conclude that 中的that以及其後面帶出的子句 ，是Vt.conclude 的受詞，所以不可分割嗎？
謝謝指教！
