a. What did Piaget mean when he said that the preoperational child "lacked conservation"? b. What is centration? c. Explain...

a. What did Piaget mean when he said that the preoperational child "lacked conservation"? b. What is centration? c. Explain the relationship between centration and lacking conservation. d. Provide an example to illustrate your understanding. Your example should demonstrate how conservation and centration are related. Remember, as always, to use your own words