The correct answer that would best complete the given question above would be "HID". When Grendel attacked Herot a second time, those who survived did so because they hid. <span>Grendel attacks Herot because of jealousy. He is jealous because Herot has friends except him. Hope this answers the question.</span>
The second time Grendel attacked Heorot, there were two types of people: those who wanted to fight, and those who chickened out and fled the premises. The first ones unfortunately didn't make it - however, the ones who fled managed to stay alive and escape from Grendel. These killings continued until Beowulf came to help them and kill the monster.
A line of reasoning that presents the opposite side of the author's argument is called (I believe) a counterargument. It states exactly the different thing from what you have first stated.