Answer:
who
Explanation:
"who" is used to a subject of the sentence
"whom" is used to an object of the sentence
e.g. I always make my friend, whom isfrom New York, laugh.
"whose" is used to an possession of a subject/ object
e.g. My friend, whose apartment is in New York, makes me laugh.
Taught is in past tense, when you say he taught it means he has already done it
He lied to him because he knew that the Cyclops would call his brothers, when blinded, so he said his name was "nobody" so as to have the Cyclops yell out: "Nobody has blinded me". This in turn caused his brothers to not react at all, because they thought that gods had blinded his brother, therefore he is yelling that Nobody blinded him. Let's say then that the third sentence is the only one that can fit the story.
The usage if vast in this passage means large, therefore the answer is A.
