I knew before the hatch to the ship opened , and I knew before I could see the light from the pod . We stood for a long time looking at each other , as if we could bridge the invisible gap spanning between us . Elfangor said , finally . The silence had been deafening . " Why ? " I asked .

Question: How can silence be deafening ?
Answer: None of the above choices .The silence is like   the thing you feel when you are deaf .The silence is actually a loud noise .Silence means a large crash