Vygotsky believed that children accomplish more difficult tasks when assisted by more advanced and competent individuals. Contemporary​ theorists, building upon​ Vygotsky's belief, encourage teachers to provide​ clues, reminders,​ encouragement, or examples to help children accomplish challenging tasks in instructional contexts. This is known as A. scaffolding. B. a zone of proximal development. C. a cultural tool. D. ​co-constructed dialogue.