The answer is man vs. society!!!
The sentence which contains a spelling error is "At first, I didn’t really like it. I had never played before, so I didn’t know all of the rules, and I would get frustrated when my team lossed or I missed a goal." The word is actually spelled <em>lost</em>.
I think is C because in the text it's the main idea.
Homework helps promote responsibility and independence in students, is a benefit of homework. That responsibility and independence that they now have can be applied to other aspects of life as well.