Myelination in the areas of the brain related to focusing attention is not complete until

A) middle or late childhood.
B) infancy.
C) until infancy and middle to late childhood.
D) late adolescence.

Myelination, the process of forming a fatty sheath around nerve fibers for faster and more efficient communication between neurons, continues in the areas of the brain related to focusing attention until middle or late childhood. While some myelination occurs in infancy, the process is not complete until later in childhood. It is important for children to engage in activities and experiences that promote attention and focus during these crucial years of brain development.