This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Dental
The small child is seeing his sibling being operated. This helps in behaviour shaping of the small child. It is known as 
Select and explain. 
A. Desensitization, B. Modeling, C. Coping, D. Hand Over Mouth Exercise
B: Modeling
Answer: B: Modeling 
Explanation: Children observing other people getting rewarded for positive behavior are likely to behave positively. Children observing an older sibling defying and being punished are less likely to defy. This is otherwise known as vicarious learning.
Modeling, a behavior management technique is based on this theory of observational learning by Albert Bandura.

Reference: Pediatric Dentistry: Principles and Practice, 2/e Muthu and Sivakumar, pdf no 245