Answer:
we need the story once you the story I'll answer. ok.
Explanation:
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.
So with this you would be wondering how did they feel? Were they angry, scared, or indifferent. How did their families fare? I hope this helps! :)