Eighteen-month-old Joey enjoys eating apples. When he sees a tomato for the first time, he says it is an apple. Joey's statement best demonstrates the concept of

Accommodation involves modifying existing cognitive schemas to incorporate new information that does not fit into pre-existing categories. If Joey had recognized the tomato as different from an apple and adjusted his understanding of fruits, that would illustrate accommodation. However, he simply categorized the tomato as an apple, indicating that he did not alter his existing schema.

Reversibility is a concept in cognitive development where a child understands that objects can be changed and then returned to their original state. Joey's identification of the tomato does not demonstrate this concept, as he is not reflecting on changes to the object's identity but rather misclassifying it based on prior knowledge.

The A-not-B error occurs when a child looks for an object where it was previously found (location A) rather than where it was last hidden (location B). Joey's situation does not involve searching for a hidden object but rather mislabeling a new object, making this choice irrelevant.

Object permanence is the understanding that objects continue to exist even when they are not visible. Joey's categorization of the tomato does not involve an understanding of object permanence; it is focused on misidentifying an object based on previous experience.