The answer is are. We're includes you, and you weren't eating the breakfast, so that cancels out. Is is used for 1 thing/person, so that can't be true, since it could be the cats, then it would be more than one. It's not was, since if it was past tense, then it would be were, not was. So that only leaves are.
The best answer is probably B inferences help readers read between the lines.
I would say that it is an example of figurative language because it applies human qualities to something that does not have completely human qualities (personification). Hope this helps!