Two Identical Glasses Are Filled to the Same Level with Juice.A

Multiple Choice

Two identical glasses are filled to the same level with juice.A child then watches as the juice from one glass is poured into a taller,thinner glass.A child who is capable of concrete operational thought might say:

A) "The tall one has more juice-see how much taller it is?"
B) "The tall one has more juice-they just look like they are the same."
C) "It's still the same amount of juice-you can tell by just pouring it back."
D) "It's still the same amount of juice-you can tell by how tall this one is."