Concept:Learning is best supported when students actively explore and construct their own understanding.Explanation:Meaningful discovery makes learners engage with the content. They solve problems, connect ideas, and apply critical thinking. This active process deepens understanding and improves retention. It also builds curiosity and intrinsic motivation. In contrast, competition, material rewards, or negative reinforcement create external pressure. They do not foster genuine learning. Therefore, classrooms should encourage discovery-based learning.Answer:A. through meaningful discovery