There should be more to this so I can answer question
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)
Hello!
I believe your answer would be B.
Based on the passage and noticeable character traits, this would best fit.
I hope this helps!