Concept:A progressive classroom focuses on child-centric learning where students actively construct their own knowledge through hands-on experiences.Explanation:Progressive education was promoted by philosopher John Dewey. In such a classroom, children take responsibility for their own learning. Teachers guide rather than dictate, and students engage in meaningful activities that help develop their reasoning and analytical skills. Learning happens by doing, not by memorising a fixed syllabus. Children are not forced to follow a rigid curriculum, nor are they labelled or segregated by ability. Rewards and punishments are not the main motivators. Instead, the environment encourages exploration and discovery. Each child participates in activities that allow them to understand new concepts and realise their full potential. This makes the learning process natural and effective.Answer:Option B: children engage in activities that realise their potential.