All four have an effect on the mood of a story.
The neighbor has to be the antagonist, because the protagonist loved his dog very much and his neighbor killed his dog, the protagonist even called his neighbor evil, so I would go with C, the neighbor.
Answer: b, c, a
Explanation: in order the first is b the second c and the last is a i don’t see a d tho
The correct answer is II. "With ears forward/with eyes watchful. Hope this helps.