Answer: Transformations
Explanation:
Hedley is still within the early childhood and is still undergoing physical and cognitive development that is why he finds it difficult to accept the cookie as one but he was satisfied and happy when he finds out that it is now in three pieces.
TO HEDLEY, THE COOKIE BEING BROKEN INTO MORE THAN ONE SAMPLE IS BETTER AND BIGGER IN SIZE THAN THE COOKIE WHEN TRANSFORMED INTO A SINGLE PIECE OF COOKIE.