Carla realised that her own necklace was missing, so she told her mother that it had gone.
The answer is A - negative capability. It is not a satire, because that means it is a mockery or ridicule of some sorts. It is not ambiguity either, because that means it doesn't have an obvious meaning, it isn't clear. "Hypocrisy" basically means pretending that you are something you are not. Thus, this leaves us with the only option - negative capability.
Yes this a very good poem and it does include alliteration and 3 Onomatopoeias :D