Answer:
I believe your answer is D. Sorry if I'm wrong.
In understanding the central idea or the main idea of a particular passage. You must take out the hard terms and look for their meanings. It is one way of understanding at the same time learning with the passage. It is also advisable to stay focus on what you are reading to easily understand it.
I believe it is called interjection:) good luck!
From the 3 creatures here I only redconize Grendel since he is from the Epic Beowulf.
Grendel is a horrible monster that doesn't enjoy for others to have fun. The fact is that he torments the Danes each night for almost 12 years. He enjoys making other people sad, miserable, and he loves to torment them. One day though he is defeated by Beowulf a strong soldier from another kingdom. Therefore ending his torment on the Danes.