Read the excerpt from Part 4 of The Odyssey.

and on our starboard beam Charybdis, dire
gorge of the salt seatide. By heaven! when she
vomited, all the sea was like a cauldron
seething over intense fire, when the mixture
suddenly heaves and rises.

Which statement best explains the simile in this excerpt?

The sea is compared to a boiling pot, emphasizing its churning.
The sea is compared to a boiling pot, emphasizing its depth.
The sea is compared to heaven, emphasizing its strength.
The sea is compared to heaven, emphasizing its size.