Concept:Collaborative learning means students work together in groups to achieve a common goal. Teachers give tasks to small groups instead of individuals.Explanation:Activity based learning uses hands‑on tasks where students learn by doing. Discovery learning lets students explore and experiment to find answers. Exploration based learning encourages curiosity and inquiry through investigation. All three methods require group interaction and teamwork. They help students celebrate diversity and develop social skills. Other options include solitary activities like watching TV or doing homework alone, which are not collaborative.Answer:B. Activity based learning, discovery learning and learning through exploration