Elliot left his backpack on the bus to school this morning. Even though his backpack is not at school with him, he still knows it exists on the bus. This demonstrates which of Piaget's concepts?

The correct answer is B) Object permanence.

The other options of the question were A) accommodation. C) deferred imitation. D) shaping.

Elliot left his backpack on the bus to school this morning. Even though his backpack is not at school with him, he still knows it exists on the bus. This demonstrates Piaget concept of object permanence.

Jean Piaget developed an important concept that is called "Object permanence." This refers to the ability a child has to know that although an object is not with the child, the object still exists. This concept is part of the Cognitive Development theory, proposed by Jean Piaget.

Answer: Permanence of object

Explanation: Piaget's theory is about the four stages of the cognitive development of children's mind. The theory depends upon the mind and intelligence of children while growing up.

The situation mentioned in the question determines any object or item that gets disappeared is not gone forever. Thus, Elliot is not worried about the backpack because he knows its not lost forever. The situation demonstrates about the object permanence concept which is understood by Elliot.