One of the Things That Differentiates the Formal and Concrete

Multiple Choice

One of the things that differentiates the formal and concrete operational stages is that during the formal stage:

A) children show clear instances of centration.
B) children assume that everyone in a room has the same view of an object as they do.
C) children show evidence of conservation for the first time.
D) children begin to think more flexibly and creatively.