Ankle and wrist I wish it also had neck on there cause those are the most spots where they usually check ur pulse
<span>the age category in which Matteo's brother most likely fall is : the 4-5 age category
In this age period, most human actually already able to walk fluently and their brain started to advance. They may have started various new things such as standing in one leg, following the line on the floor, drawing the wall with shapes, etc.</span>
The circulatory system, if I am not mistaken!
Hope this helped!