Is the brain function the most obvious indicator of physical development?

While brain function is a crucial aspect of overall development, it is not the most obvious indicator of physical development. Physical development is often assessed through observable factors such as growth in height and weight, motor skills, and physical coordination. Brain function influences behavior and cognitive abilities, but it is just one part of a broader spectrum of physical and developmental indicators. Therefore, while interconnected, brain function alone does not serve as the most apparent measure of physical development.