Nine-year-old Brandon has no problem understanding that the 20-year-old woman who sometimes stays with him is both a student and a babysitter.According to Piaget,this is because Brandon's thinking has moved beyond:

A) conservation.
B) object permanence.
C) overregularization.
D) centration.

Brandon's ability to understand that the woman can be both a student and a babysitter indicates that his thinking has moved beyond centration, which is the focus on one aspect of a situation to the exclusion of others. Piaget identified centration as a characteristic of preoperational thought, which typically occurs in children aged 2 to 7 years. By age 9, children like Brandon are in the concrete operational stage, where they can consider multiple aspects of a situation simultaneously.