Correct option is D
cultural tools, cognitive
Lev Vygotsky emphasized the role of cultural tools in advancing cognitive development. Cultural tools include language, writing systems, and educational materials, which are integral in shaping thought processes and knowledge acquisition. Vygotsky believed these tools enable children to learn the skills and knowledge of their culture, significantly impacting cognitive development. This contrasts with physical development, which is more about bodily growth and coordination, moral development focusing on ethical and moral reasoning, and social development, which, while influenced by cultural tools, specifically pertains to interactions and relationships with others.