What Is the Most Accurate Statement Regarding Psychological Processes

What is the most accurate statement regarding psychological processes?

A) They are mostly based on nature throughout a person's life.
B) They are based on a complex interaction between nature and culture throughout a person's life.
C) They are mostly based on nature in infancy, and mostly based on culture in childhood and adulthood.
D) They are mostly based on culture in infancy and childhood, and mostly based on nature in adulthood.