John, a 1-Month-Old Infant, Is Lying in His Crib When

Multiple Choice

John, a 1-month-old infant, is lying in his crib when, for the first time, he accidentally puts his hand in his mouth. Immediately, John begins to suck on his hand, something he's done before but with objects other than his hand. This behaviour illustrates Piaget's concept of

A) accommodation.
B) assimilation.
C) adaptation.
D) conservation.