Answer:
does not yet understand conservation
Explanation:
The concept of conservation was proposed by psychologist Jean Piaget and the concept emphasizes that an infant recognizes that altering the shape of a material or object does not alter its number, total volume or mass. His hypothesis indicates that this capacity is not present in children between the ages of 2 and 7 but comes later at the concrete operational stage between the ages of 7 and 11. As per the question, Colin does not understand that pieces of sandwich would not decrease its size and it reflects that he lacks the understanding of conservation.
