Sam and His Siblings Are Modeling Clay

Multiple Choice

Sam and his siblings are modeling clay. He is the only child at the table who realizes that rolling a ball of clay into a thin line does not alter the amount of clay, and has been accused several times by his younger siblings of stealing their clay. Unlike the other children, Sam is in the __________ stage of development.

A) preoperational
B) sensorimotor
C) concrete operations
D) linear