Final answer:
The subject of this question is Psychology. The 9-year-old boy's behavior towards teachers and class activities is concerning and may require intervention to improve his attitude and behavior in school.
Step-by-step explanation:
The subject of this question is Psychology. Based on the information provided, the 9-year-old boy's defiant behavior towards teachers and refusal to comply with class activities indicates a problem with his behavior and attitude in an educational setting. It is important to consider factors such as his home environment, previous experiences, and any potential underlying issues that may contribute to his behavior. Addressing these factors and using appropriate behavioral interventions and strategies can help him develop positive behaviors and attitudes towards school and teachers.