D because if you insert in danger of in the sentence where vulnerable is it still makes sense.
The correct answer should be complex details
They are found by carefully comparing and contrasting basic ideas. For example, if you compare and contrast pro and against smoking bans, then you can discover many complex details that cannot be seen at first glance.
To help Hrothgar rid himself and his people of a fearsome, and troublesome monster. Otherwise known as Grendel.
