Analyses of the Specific Injury That Phineas Gage Suffered,along with Careful

Analyses of the specific injury that Phineas Gage suffered,along with careful analyses of his behavior after the injury have helped to:

A) document the plasticity and flexibility of the brain
B) establish the role of the prefrontal cortex in emotional regulation
C) document how speech can be impaired by specific kinds of brain damage
D) provide clues to curing or rehabilitating patients who undergo such injuries