Answer: A) Playful.
Explanation: the mood of a character in a story is the attitude of the character towards a situation of another character. In the given excerpt from "Mending Wall" the speaker has a playful mood towards his neighbour and the situation where he was asked to build a wall, and he doesn't understand what is the point. To express his point of view he asks questions and he has a playful attitude.
Answer:
I think it is A. Hope this helps!!
Providing a quotation from a credible source. Her neighbor is a source but they are not a professional, with a quote from a vet or a pet trainer it would make her argument more effective.