A Language is a cultural and social phenomenon essential for cognitive development, as it mediates complex mental functions like memory, attention, and problem-solving.
B Language is primarily a biological phenomenon that develops independently of social and cultural contexts.
C Vygotsky considered language to be a secondary factor in cognitive development, only important for basic communication skills.
D Cognitive development occurs before language development, and language has no impact on complex mental functions.
E Vygotsky believed that language development is purely dependent on innate abilities, without any influence from social interactions.