Piaget's theory of development assumed that all children pass through a series of universal stages in a fixed order from birth to adolescence. These are .a)5; sensorimotor, preoperational, formal operational, concrete operational, and maturationb)4; sensorimotor, preoperational, concrete operational, and formal operationalc)3; preoperational, concrete operational, and formal operationald)6; sensorimotor, preoperational, concrete operational, formal operational, assimilation, and accommodation