You Suspect That a Young Child Is in Piaget's Preoperational

Multiple Choice

You suspect that a young child is in Piaget's preoperational stage. Which of the following would you look for to confirm your suspicion?

A) A lack of object permanence
B) Success at a conservation task
C) Failure with the three-mountain problem
D) The ability to think abstractly and form hypotheses
E) Evidence of proximal development