The correct way to say that sentence would be to put "everyone's innocence"
I would say that A) even the ice-hard heart of Hades melted - uses hyperbole, because he didn't really have an ice heart, and it didn't really melt, it is exaggeration.
A it wouldn’t make sense if you used the other options
Answer:
The answer is D, "The source of the Mississippi River is a peaceful lake in Minnesota; from there, the river flows south past 10 states to its mouth in Louisiana, where it empties into the Gulf of Mexico."