Vygotskys theory of Sociocultural development is proposed by Lev Vygotsky. He is a Russian scientist and he emphasizes the role of society and culture in the development of the child. According to Vygotsky, the main needs in the development of a child is-Social interaction??Children try to interact with people.Example: Peer groups, family members, etc.Culture?Children adopt the culture by interaction. Language??Children can easily intimate their primary language through interaction or communication.Negative reinforcement is a method that is used to teach some specific behavior, like an escape, avoidance, etc which is not proposed by Lev Vygotsky.?So that's why option (3) is correct.?Additional InformationVygotsky also proposed a model of speech during the development of the child:Social speech ( from 2 years)Private speech ( from 3 years)Silent speech (from 7 years).?