A. Mandatory organization B. Autonomy of process C. Flexibility of form D. Diversity of content

Answer a

Extracurricular activities are an indispensable way to cultivate all-round talents, a necessary supplement to classroom teaching and an important part of enriching students' spiritual life.

Classification of extracurricular educational activities:

2. Extracurricular activities can be divided into on-campus activities and off-campus activities, and the difference between them lies in the difference in organization and guidance. Campus activities are activities led by schools and guided by teachers. Off-campus activities are activities organized and guided by off-campus educational institutions. It should be noted here that the activities in the school are not limited to the scope of the school, but can also be organized outside the school. The difference between them is only in organization and leadership. Here, we refer to the activities inside and outside the school as extracurricular activities.