Answer:
His amygdala is fully developed and his prefrontal cortex is underdeveloped.
Explanation:
Let's break both structures down:
We can see Michael's amygdala is fully developed since he displays a lot of emotions, mostly anger. Since he is only 2 years old, it can be deduced that his prefrontal cortex is not yet fully developed since he doesn't have much self-control and problem solving, amongst others.