It is suggesting that the rain is coming down very heavily. The rain is a deluge, soaking everything with large, heavy, water-filled droplets quickly falling. The is based off the original idiom "It's raining cats and dogs" to indicate that it is pouring rain. It takes the hyperbole one step farther to add heavier and larger animals to show the amount of rainfall.
The correct answer is C. He leads a group of men in grand and dangerous adventures.
An archetype is a character that appears in literatures all over the world - every nation has a character that might fit into this description. It is a common character that is known to everyone - a hero who takes his people on grand adventures.
Odysseus is one of such characters, but so is Beowulf, and even Harry Potter, in modern literature.
A. because most people would have a healthy breakfast like cereal or fruit