Austin Is Presented with the Pendulum Problem Described in the Text

Multiple Choice

Austin is presented with the pendulum problem described in the text. He begins his experiments with the belief that the heaviness of the weight is the most important factor, tests his belief with unsystematic experiments, and concludes that his belief is accurate even though no clear conclusion could be drawn. Austin is in Piaget's _____ stage.

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