Which One of the Following Statements Best Describes Psychologists' Proposal

Which one of the following statements best describes psychologists' proposal that children's knowledge sometimes takes the form of theories?

A) The ways in which children categorize their experiences usually have little relevance to physical reality.
B) Children develop a general set of beliefs about how the world operates.
C) In the early years,children develop concrete understandings of events; these understandings become increasingly abstract as they reach adolescence.
D) Children form hypotheses about what things are and are not examples of a concept.