Context: The sharp tone of the two indicated they were having a fight . He loved observing human - human interaction so he decided to pay attention to what was said ; besides , the boy \'s voice was irresistible . " I see no reason why my dog ca n\'t stay here with me ; it \'s a completely harmless pet and never attacked anybody . I ca n\'t just leave him outside in the cold , he \'ll probably feel lonely ! "
Question: What is the most likely reason the fight started ?
Option 0: None of the above choices .
Option 1: It appears they are arguing over whether or not a dog can stay at their place .
Option 2: They started fighting because he did not pay attention when he should have .
Option 3: They started fighting because the dog was left out in the cold .
Answer: 1