Answer: B) He is critical of his neighbor because he believes that he is stuck in the past.
Explanation: this poem tells how the speaker and his neighbor reunite each year to reconstruct the fence that separates their lands, the speaker doesn't understand why they do that, since they don't have any animals to contain, only trees, but the neighbor insists because he follows his father's saying: "good fences make good neighbors", this also demonstrates how the neighbor is stuck in the past, by following an old saying and tradition.
