As Tim Was Swinging His Toy Hammer, the Hammer Flew

Multiple Choice

As Tim was swinging his toy hammer, the hammer flew out of his hand and landed behind the couch and out of view. Rather than look for it, Tim acted as though the hammer no longer existed. Tim's behavior suggests that he is in the _____ of cognitive development.

A) preoperational stage
B) concrete operational stage
C) formal operational stage
D) sensorimotor stage