Answer:Jonathan doesn't yet demonstrate conservation.
Step-by-step explanation:
What does conservation mean?
Conservation defines the ability to use logic in differentiating that quantity doesn't change because the shape , container or size of something is adjusted.
This is according to the psychologist Jean Piaget.
This ability is not developed earlier in a child's life , it is absent in their pre-operational stage when they are still aged 2-7 years but it becomes present in the concrete operational stage.