Concept:Lev Vygotsky’s socio-cultural theory stresses that learning happens through social interaction, especially with more knowledgeable others, using scaffolding.Explanation:Vygotsky believed children need guided help, not isolation. Scaffolding means giving temporary support like hints or leading questions. This enables children to solve tasks just beyond their current ability (Zone of Proximal Development). He rejected leaving children entirely on their own or using material rewards. Interaction with adults or capable peers is essential for meaningful learning.Answer:Option B is correct.