The correct answer is 3) The narrator has been insulted many times and vows revenge against Fortunato.
At one point in time when he felt that he had been insulted, the narrator decided that enough was enough and that he would have his revenge.
The correct answer is C: in the other options not all the words are prepositions (for example: A: descends is a verb, B: took is a verb, D: been is a verb)
