Answer:
His concern for sled dogs...I believe it is his desire to help his furry pal. I was going to mention his worry for his sled dogs, but I lacked the rest of the context. "they do get on the nerves awful" is possibly referring to the sled dogs and how they get on his nerves.
Explanation:
A refrain is a line or group repeated throughout a poem
Disagree is the correct answer because the prefix dis- means to do the opposite.
Noun because it’s a place?