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!
George Herbert, "The Collar" - cacophony
John Donne, Sonnet 10 - paradox
John Donne, "The Sun Rising" - hyperbole
Andrew Marvell, "To His Coy Mistress" - carpe diem
John Donne, "The Flea" - synecdoche
“Sheep’s tail” is a singular possessive noun because the apostrophe signals that the sheep is in possession of its own tail.
Probably be unaffected
because they already have a fixed mindset, meaning they know what they’re going to do
I'd say the answer is B, 'then soared to the uttermost reaches' - birds soar when they fly high, and it flies 'to the uttermost reaches', which clearly refers to a bird.