The correct answer is: D. All the teachers.
The responsibility of organizing curricular activities should be shared by all the teachers. This is because curricular activities are an important part of the school curriculum and they help students to learn and grow in a holistic way. All the teachers should be involved in planning and implementing these activities, as this will ensure that they are relevant and engaging for all students.
Option A is incorrect because the principal is not the only person who should be responsible for organizing curricular activities. All the teachers should be involved in this process, as they are the ones who know the students best and can tailor the activities to their needs.
Option B is incorrect because the teacher who is appointed for this work may not be the best person to do it. It is important to involve all the teachers in the planning and implementation of curricular activities, as this will ensure that they are relevant and engaging for all students.
Option C is incorrect because only some teachers may take interest in curricular activities. It is important to involve all the teachers in this process, as they are the ones who know the students best and can tailor the activities to their needs.