Answer:
"behind", "from", "through"
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.
Hypo means below and derm means skin, so it's hypodermic :D
Read and research both sides. Pick your choice, and use evidence to back your claim up. Make sure to also bring up the opposite side’s opinion in order to make yourself and your statement look and sound better