Which of the Following Is True About School-Based Interventions for Children

Which of the following is true about school-based interventions for children and adolescents?

A) School-based counseling interventions are only significantly effective in working with post-secondary students.
B) There has not been enough research to provide any conclusive evidence.
C) Significant student improvements in academic performance, attitudes, and behaviors resulted from school-based counseling services.
D) School-based counseling interventions are extremely difficult to implement and provide small results.