The best and most correct answer among the choices provided by your question is the first choice.
The word that best describes bias is "prejudice."
I hope my answer has come to your help.
Answer:
The biggest obstacle that collage students gave is.bullying and harassment
The lair becomes brighter after Grendel's mother dies, and Beowulf is able to inspect his surroundings. He finds Grendel's body and, to take further revenge, he decapitates the corpse.