Five-Year-Old Steven Climbs Up the Small Tree in His Parents

Multiple Choice

Five-year-old Steven climbs up the small tree in his parents' backyard. When he's ready to come down, he begins to cry for his mother to help. Steven's inability to retrace his steps to go back down the tree illustrates that Steven's thinking lacks

A) animism.
B) reversibility.
C) object permanence.
D) conservation.