Jack suffered a brain injury as a result of hitting his head while waterskiing.

Jack suffered a brain injury as a result of hitting his head while waterskiing. One of the problems that developed was that Jack could not pronounce certain words correctly for a long period of time until he had extensive speech therapy and can now speak as he did before his accident. This is an example of the brain's ______ which allowed the structure and function of his brain cells to change to adjust to the trauma.