Developmental Psychologists Have Settled on Which Description of Children's Understanding

Developmental psychologists have settled on which description of children's understanding of living things?

A) Children have only a shallow understanding of living things until they are 7 to 10 years old.
B) Children understand the essential characteristics of living things by the age of 5.
C) Young children simultaneously possess both mature and immature biological understanding.
D) Developmental psychologists are still in dispute over which description is most accurate.