This is speculation, so please get a second opinion.
I think it's c, because the adults, in this passage, are teaching children how to behave, and therefore a and b are ruled out. d could have possibly been one, but I think that it would not be, because the adults are not explicitly setting clear examples for their children.
Again, you should get a second answer before you answer this.
Answer:
I can probably help but I need to see the questions first
Answer:
I'm pretty sure the highlighted phrase should be "like fraternities and sororities" because it adds unnecessary details, possibly leaving out ones which are more important.
Explanation:
Hope this helps!
an act of speaking one's thoughts aloud when by oneself or regardless of any hearers, especially by a character in a play