Malik's mother asks if he wants his sandwich in one piece or cut into two pieces.Malik asks her to keep it in one piece,because he isn't hungry enough to eat two pieces.What does this answer suggest about Malik's cognitive development

A)  He has not yet mastered object permanence. 
B)  He cannot assimilate changes in the shape of the sandwich. 
C)  He does not yet understand conservation. 
D)  He cannot accommodate changes in the shape of the sandwich.

Malik's answer suggests that he is not yet able to understand conservation, which is the ability to understand that changing the shape of an object (such as cutting a sandwich) does not change its amount or volume. He believes that cutting the sandwich into two pieces would create more food than he can eat, indicating that he has not yet developed this cognitive ability. This is a common developmental milestone that typically develops in children around the age of 7.