Context: She actually did quite a number on her tooth - even more than what you can see from the front . The back of the tooth is much more damaged . She 'll have to live with it ( and the teasing from her sister ) until next week when he 'll put a temporary on it , and then a couple weeks later , a porceline crown . He promises to have it all fixed by the beginning of the school year , because is n't this just how every 14 year old girl wants to start Gr .
Question: What may be the reason for their injury ?
Option 0: The tooth was weak and broke off due to poor hygiene .
Option 1: Their tooth had naturally broken off .
Option 2: They had fell and broke their tooth on the ground .
Option 3: None of the above choices .
Answer: 2