In "Mending Wall", by Robert Frost, the person who questions the necessity of the fence is the narrator. The narrator is not sure whether to mend the fence or not, but his neighbor repeats his father's words and traditions 'Good fences make good neighbors'. He thinks that mending the wall is being practical and doesn't want to hear the narrator's opinion against its utility.
Simile. if it uses like or as it is a simile
The option with the commas is the best written sentence
Expresses a negative connotative meaning (: