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:
what did u mean by that i don't understand
I’m pretty sure it’s a metaphor!
the poet refers to the 'wealth' of happiness and gaiety.
The answer is A). I hope this helps.