The conflict of this play is that Mr. Teller wants his puppy back. We know this because June says to Mr. Teller that they didn't think he would come to take the puppy back home. Mr. Teller says he told them he'd come back when he dropped the puppy off.
The second one seems to be B. Describing the amount of stories told would also imply that it connects the migrants. The first one might be either A or D. A would make sense because bulldozing a field also shows the difficulty of levelling it whereas the others don’t connect as much to the excerpt.