Answer:
Option (2).
Explanation:
Two main types of memory are short term memory and long term memory. Short term memory remains for short period of time where as long term memory remains in the mind of person for long time.
The brain damage may cause the distinction between the short term and long term memory. The particular damaged area of brain may vanish the short memory or either the long term memory. The short term memory can be converted into long term memory.
Thus, the correct answer is option (2).
