Conservation is mastered in the concrete operational stage.

Conservation is mastered in the concrete operational stage.

• A. Sensorimotor
• B. Preoperational
• C. Concrete operational
• D. Formal operational

Answer: (C)

Conservation is the understanding that quantity stays the same even when its appearance changes. This is mastered in the concrete operational stage because thinking becomes logical and decentered around concrete objects. Children at this stage can perform reversible operations and consider multiple dimensions at once, so they understand that pouring water into a different‑shaped container doesn’t change how much water there is. Earlier stages show why this isn’t yet mastered: in the sensorimotor stage, knowledge comes from action and trial and error; in the preoperational stage, children focus on perceptual cues (centration) and can’t reverse steps or hold multiple aspects in mind. In the formal operational stage, reasoning becomes more abstract, but the key conservation understanding has already solidified for concrete problems.

Conservation is the understanding that quantity stays the same even when its appearance changes. This is mastered in the concrete operational stage because thinking becomes logical and decentered around concrete objects. Children at this stage can perform reversible operations and consider multiple dimensions at once, so they understand that pouring water into a different‑shaped container doesn’t change how much water there is. Earlier stages show why this isn’t yet mastered: in the sensorimotor stage, knowledge comes from action and trial and error; in the preoperational stage, children focus on perceptual cues (centration) and can’t reverse steps or hold multiple aspects in mind. In the formal operational stage, reasoning becomes more abstract, but the key conservation understanding has already solidified for concrete problems.