Children in Piaget's preoperational stage of development lack

Question

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The concept of conservation refers to the understanding that an object's physical characteristics (such as shape or volume) remain the same even if the appearance is altered in a superficial way. This concept is not yet fully understood by children in Piaget's preoperational stage of development, which typically lasts from ages 2 to 7. Children in this stage do have language (option A), are developing schemas (option B), and have some understanding of object permanence (option D).

Children in Piaget's Preoperational Stage of Development Lack