C is the choice I would make because I believe the writer is planning to answer this question: "and how come we think dogs are so smart". The writer never tells us what dogs can't do (a) or mention others being dumb (b) and doesn't make fun of humans (d)
Answer:
5
Explanation:
The first sentence introduces the paragraph; there's nothing out of order there. The second sentence expands upon the first idea, and the third and fourth sentence continue talking about his consistency. Only the fifth sentence has a slightly different topic; it is therefore out of order. :)
