Context: That got Evie used to her . Dr. Keck is a pro at this ! It was cool to watch her play with her foot and laugh with Evie , all the while , she 's checking out her foot movement . She 'd stick out her tongue , and Evie would do the same .

Question: Why was Dr Keck laughing with Evie .
Options:
0. The doctor was laughing because Evie was such a great comedian .
1. The doctor was laughing because Evie was ticking her foot .
2. The doctor and Evie were laughing after they saw the shape the patient 's tongue was in .
3. The doctor was laughing to lighten the mood so that the child would be agreeable while the doctor examined her .
Answer: 3