I am not very sure and I might be wrong but I’m pretty sure that it is C.
Answer:
1. because minerva can't change gods into different shapes only jupiter can
2. because medusa was a human and minerva can change humans into different things.
3. because minerva knows that neptune is the second strongest out of the gods and goddess
p.s these are their roman names
She was a woman and women were not seen as capable of doing such incredible things back then.
