Identifying Certain Types of Brain Functions (Language Skills,for Instance)as Lateralized

Identifying certain types of brain functions (language skills,for instance) as lateralized means that ____.

A) areas responsible for these functions are located at a uniform depth throughout the cerebral cortex
B) all human beings possess the ability to perform these functions
C) the entire cerebrum is involved in performing these functions
D) they are performed most efficiently by one or the other of the two cerebral hemispheres