I think disrepair is more positive
Well since you didn’t provide any context, what you need to do is read his speech and answer what part is the least boring or more Intresting then the rest. Sorry if this doesn’t help
The answer is A. Think about what his interests are or ask others to input.
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)