Four-Year-Old Nina Is Shown Two Balls of Play Dough of the Same

Multiple Choice

Four-year-old Nina is shown two balls of play dough of the same weight. One ball is then mashed into a flat shape. When Nina is asked if the two objects have the same weight, she replies that the flat-shaped dough is heavier. In the context of Jean Piaget's cognitive theory, this illustrates Nina's inability to grasp

A) theory of mind.
B) object permanence.
C) conservation.
D) transduction.