The topic sentence is the last one "A hero is someone who sacrifices himself for a greater cause."
Explanation:
what are you asking? make it clear
I think the bolded words would be "whom Mr. Stein chose". The clause whom Mr. Stein chose is an example of an adjective because the clause describes the word student. Student is the subject of the sentence and is a noun. An adjective describes a noun or another subject. an adverb describes a verb or another adverb.
The correct answer among all the other choices is Hasty generalization. The sentence that "William Shakespeare was a genius and he believed there is a God" is a hasty generalization. Thank you for posting your question. I hope this answer helped you. Let me know if you need more help.