Tendai's Mother Has Just Poured Two Glasses of Orange Juice

Multiple Choice

Tendai's mother has just poured two glasses of orange juice, one for Tendai and one for his sister. After they are poured, Tendai becomes very upset that he got less juice than his sister. Their mother points out that while Tendai's glass is shorter, it is also wider, and thus both children have the same amount. Tendai continues to protest, arguing that his juice is shorter, so he has less juice. Piaget would explain Tendai's behaviour as being the result of

A) animism.
B) centration.
C) intonation.
D) a primary circular reaction.