What are we supposed to be solving here
Well yeah, of course it is. I'm not really sure what the rest of the question is.
17 is E, i think because 2 sliding plates are transversal
The answer is...
<span>Fortunato thinks Montresor has played a joke on him.
</span>
He literally is so drunk, that he doesn't understand that his "friend" was building a wall to cover up the room where he had chained him inside the catacombs. IF he were to be hoping that this is all a joke (second choice) He would be able to understand the situation, wouldn't be laughing... and try as hard as he could to get out. In this case he is just laughing at the "joke" his "friend" has played on him.
Good Luck! :)
What Melissa can infer by observing her dog's behavior is that he wants to play catch.