Which of the Following Illustrates Conservation

Multiple Choice

Which of the following illustrates conservation?

A) Deirdre believes that five pennies have more value than two nickels but he doesn't know the value of either coin by itself.
B) Joseph saves his energy by brushing his teeth in the shower but doesn't realize that he is wasting water that way.
C) Rebekah recycles her glass bottles but not her cell phone batteries because she doesn't think they can be recycled.
D) Scott knows that one piece of pizza cut into two slices is the same amount as cutting the same piece of pizza into three slices.