Maybe just read the story a few times more and make a guess on what you think is the best answer?
The sentence which is the most objective is <span>A. My mother taught Italian lessons at the community center.
</span>It is a fact, therefore it is objective. The other sentences are somebody's opinions - stupid sisters, crazy Greek family, a real pain - these words show that it is someone's opinion, which is subjective, not objective.
People think corona came to the world to get off and down the population but that’s is something that could happen by a reason and for me is the government wanted to decrease the amount of people’s
It was in line after they got off the train