I choose the third one. It’s the only one that makes sense to me.
I would recommend reading over the lines many times and remembering the cues. You could make flash cards with one side having the cue and the other with the line.
The characters are talking animals. Any other option would be logical and easy to explain, but talking animals don’t exist unless you consider a parrot. Nonetheless, the other options are logical and realistic while the last option is not at all realistic. Most children’s books are not realistic.
The answer is Brandeis University.