Concept:A child-centered classroom prioritizes the learner’s active role in building knowledge rather than passive imitation.Explanation:In this approach, the teacher designs activities based on children’s needs, interests, and abilities. Children participate actively through discussion, exploration, and hands-on tasks. They do not just copy answers or listen passively. This method contrasts with teacher-centered classrooms where children are mere imitators or listeners. Thus, the key idea is that children are actively engaged in constructing their own understanding.Answer:B. are actively engaged in construction of knowledge.