Describe Piaget's sensorimotor stage milestones and what cognitive abilities emerge by the end of this stage.

Describe Piaget's sensorimotor stage milestones and what cognitive abilities emerge by the end of this stage.

• A. Reflexes are the sole milestones with no object permanence.
• B. The stage ends with abstract reasoning.
• C. Symbol use does not emerge during this stage.
• D. Reflexes, object permanence, trial-and-error problem solving, and the emergence of symbol use by the end.

Answer: (D)

Piaget's sensorimotor stage moves from reflex-driven behavior to coordinated actions that prepare the child for mental representation. In this stage, infants start with simple reflexes and gradually organize those actions into purposeful activities. A key milestone is object permanence—the understanding that objects continue to exist even when out of sight. They also learn by trial and error, figuring out how to get a toy or achieve a goal through repeated actions. By the end, symbol use emerges, meaning they begin to think about and represent objects and events mentally—leading to early pretend play, imitation, and the use of language as a symbolic tool. This combination of reflex performance, developing object permanence, problem-solving through trial and error, and the emergence of symbolic thought is what the best answer captures. The other statements miss important aspects: relying only on reflexes ignores object permanence; ending with abstract reasoning would occur much later; and denying symbol use ignores a major development by the end of this stage.

Piaget's sensorimotor stage moves from reflex-driven behavior to coordinated actions that prepare the child for mental representation. In this stage, infants start with simple reflexes and gradually organize those actions into purposeful activities. A key milestone is object permanence—the understanding that objects continue to exist even when out of sight. They also learn by trial and error, figuring out how to get a toy or achieve a goal through repeated actions. By the end, symbol use emerges, meaning they begin to think about and represent objects and events mentally—leading to early pretend play, imitation, and the use of language as a symbolic tool. This combination of reflex performance, developing object permanence, problem-solving through trial and error, and the emergence of symbolic thought is what the best answer captures. The other statements miss important aspects: relying only on reflexes ignores object permanence; ending with abstract reasoning would occur much later; and denying symbol use ignores a major development by the end of this stage.