Final answer:
Vygotsky's sociocultural theory posits that children's cognitive development is mainly influenced by social interactions and cultural influences. The correct option is b.
Step-by-step explanation:
Lev Vygotsky, who proposed the sociocultural theory of development, would be more likely to assert that children's cognition develops due to b. Social interactions and cultural influences.
Vygotsky emphasized that cognitive development is heavily influenced by social interactions; children learn and develop cognitively when they interact with more knowledgeable others within their social and cultural contexts.
This is quite distinct from Jean Piaget's perspective, which tended to focus on biological maturation and individual exploration as the basis for cognitive development. The correct option is b.