Context: Routine is what comforts her , more than anything else . She needs to be able to anticipate how something with play out in order to feel safe ( she started screaming during group singing because it lasted longer than usual , I realised that usually we sing 5 songs and that day we 'd sung 6 ... from then on singing was 5 songs , she 'd count down after every song and then we 'd leave ) . She had been struggling with confusing 12 with 22 and 21 . Usually when working with her math cards I would correct her , " that 's 21 , find 12 . "

Question: Why does routine comfort her ?
Options:
0. None of the above choices .
1. Routine comforts her because she wants to be able to anticipate everything , from singing to math .
2. Routine comforts her because she is a child and she gets scared and temperamental easily .
3. Routine comforts her because she was raised from a young age in a consistent , stable environemnt .
Answer: 1