Answer: C. when the character speaks directly to the audience or specifically to one character (like a secret)
Explanation: usually when spoken aside, the audience hears what is being said, however the characters them selves are oblivious and haven't heard what is being said, since it is not intended for their ears.
It is a way to find out the purpose that is going to be achieved in a short story and to list details about it.
I hope that helps. If it does please mark me brainiest, if it doesn't please don't