Daryl has a ball of Silly Putty. His 6-year-old son, Mason, watches as Daryl flattens the Silly Putty into a thin “pancake.” When Daryl asks Mason if there is now more Silly Putty, Mason replies “Yes” because he has
a. an understanding of scaffolding
b. not mastered the concept of conservation
c. an understanding of object permanence
d. demonstrated fast-mapping
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