In Anne of Green Gables, Anne promises Diana she'll write Tuesday night. Diana promises to haunt the post office to wait for the promised letter.
Haunt, in this context, is meant "to linger". It means to frequent a place, or be relentlessly present.
Answer: It's the first choice:)
Hope this help:)
This would be "Rising Action." Most problems happen here.
Think of it in movies. Your ACTION is because of a CONFLICT two characters are having.