Answer: Storage and retrieval
Explanation: In Keisha's case, as mentioned, she will remember for many years her friend's wedding night, so it's long-term memory, and that memory is arranged and stored as encoded in different parts of the brain, not in all parts, but not only one part of the brain. This means that a long-term stored memory encoded in this way can always be found and "recalled". There is another important fact in the question, that this is a really beautiful night of her friend's wedding. It should be said that all information is initially stored in short-term memory, and that important information is transferred over time to long-term memory. Since this is really important information / experience when it comes to Keisha, then surely all the information, that is, the experiences of the wedding will go into her long-term memory and she will remember the wedding for many years.