a principle that seems to underlie the three stages model of memory is that

It is that "the more you process something that you want to memorize, there are more chance that it will be kept in the long-term memory storage".

The theory states three stages which are implicated in the memory procedure and they are:

1)      Encoding

2)      Storage

3)      Retrieval of information

answer: a

explanation:

i r r e l e v a n t