The community regularly organizes teenagers to carry out interest group activities such as calligraphy, painting, singing and dancing, which belongs to () youth social work service.

Answer: b

The content of youth social work can be divided into three categories, namely developmental youth social work service, preventive youth social work service and corrective youth social work service. A developmental social work service for teenagers aims to meet their physical, psychological and social development needs, provide social resources and assist their normal development.