Imagine a family of farmers in the Neolithic age. They are a multi generational family living together on a large farm. They have bees, chickens, and other animals and crops that keep them fed. They have several shelters that are sturdy. Last year, however, floods came and took many of their large animals and rained out their crops. Some of the family died from starvation. They are planting this year.

What was piaget's explanation as to why preschool-age children in the preoperational stage make errors on tasks requiring conservation? a) preschool children's tendency toward centration prevents them from focusing on other relevant features of a situation b) preschool children have not yet developed numerical understanding; therefore, different amounts are meaningless c) preschool children's neural-visual network is not fully matured d) preschool children have not lived long enough and accrued enough experience to know the difference between quantities