Which set correctly pairs Piaget's stages with a key milestone in each?

Which set correctly pairs Piaget's stages with a key milestone in each?

• A. Sensorimotor — object permanence; Preoperational — egocentrism and lack of conservation; Concrete operational — conservation, logical thinking; Formal operational — abstract reasoning.
• B. Sensorimotor — language development; Preoperational — reversibility; Concrete operational — conservation; Formal operational — ethical reasoning.
• C. Sensorimotor — object permanence; Preoperational — egocentrism and lack of conservation; Concrete operational — conservation and logical thinking; Formal operational — abstract reasoning.
• D. Sensorimotor — symbolic play; Preoperational — concrete thinking; Concrete operational — object resizing; Formal operational — moral reasoning.

Answer: (C)

Understanding Piaget's stages and the milestones associated with each helps explain how thinking becomes more organized and abstract over time. In this sequence, sensorimotor thinking centers on the world through direct experience, and a key milestone is recognizing that objects continue to exist even when not seen—object permanence. In the preoperational stage, thinking is more symbolic and egocentric, and a major milestone is the tendency to view the world primarily from one perspective while not yet grasping conservation, the idea that quantity stays the same despite changes in appearance. As children enter the concrete operational stage, they begin to think logically about concrete objects and events, with conservation and the ability to perform reversible, organized thought serving as core milestones. Finally, the formal operational stage brings the capacity for abstract reasoning, hypothetical thinking, and more systematic problem solving. This progression captures how cognitive abilities become more sophisticated and less tied to concrete experiences as children grow. Compared with other pairings, this set consistently assigns a milestone that truly reflects each stage’s defining shift, for example including both conservation and logical thinking in the concrete stage rather than listing only one, and placing abstract reasoning with the formal stage rather than earlier.

Understanding Piaget's stages and the milestones associated with each helps explain how thinking becomes more organized and abstract over time. In this sequence, sensorimotor thinking centers on the world through direct experience, and a key milestone is recognizing that objects continue to exist even when not seen—object permanence. In the preoperational stage, thinking is more symbolic and egocentric, and a major milestone is the tendency to view the world primarily from one perspective while not yet grasping conservation, the idea that quantity stays the same despite changes in appearance. As children enter the concrete operational stage, they begin to think logically about concrete objects and events, with conservation and the ability to perform reversible, organized thought serving as core milestones. Finally, the formal operational stage brings the capacity for abstract reasoning, hypothetical thinking, and more systematic problem solving. This progression captures how cognitive abilities become more sophisticated and less tied to concrete experiences as children grow.

Compared with other pairings, this set consistently assigns a milestone that truly reflects each stage’s defining shift, for example including both conservation and logical thinking in the concrete stage rather than listing only one, and placing abstract reasoning with the formal stage rather than earlier.