I would say that the money from the Vending Machines that went to the academics is the rebuttal the author writes
C.black licorice, cotton candy, and penuche
A credible peer-review source is from a source that isn't biased, or is not related to you. It is best to find someone who isn't one of your friends. Since they are credible, the source should be verified that they know what they are talking about as well. I hope this makes sense.
The answer would be "A'", to connect and engage with the audience.
Although you have not provided the needed excerpt, here are key quotes from Book 12 that show Scylla could not be defeated.
“For Scylla is not mortal; moreover she is savage, extreme, rude, cruel, and invincible. There is no help for it; your best chance will be to get by her as fast as you ever can,” This kind was spoken by the Goddess Circe.
“Scylla pounced sown suddenly upon us and snatched up my six best men.” This shows that even his best men couldn’t have the chance to fend off the sudden Scylla that devoured them.
Hope this helps!