The case of HM is a documented case of a patient who could n
     The case of HM is a documented case of a patient who could not form new long-term memories due to the removal of a specific brain region. This suggests that this brain region is crucial for:  remembering events that occurred many years ago.  manipulating information in working memory.  transferring information from the short-to the long-term memory store.  remembering events that occurred in the last 20 seconds. 
  
  Solution
The answer is C), transferring information from the short- to the long-term memory store.
The region of the brain which is removed in this case is hippocampus, which is involved in the process whereby short-term memory gets transferred to long-term memory.

