Answer:
a. maintenance rehearsal; short-term memory
Explanation:
Maintenance rehearsal is a term used to refer to the time when we repeat information over and over again to keep our brains safe, that is, until we memorize. This type of strategy is part of short-term memory, which is one that stores information for a period of time and then destroys it.
An example of this occurs when you repeat someone's name several times until you memorize it. In that case, you would use maintenance rehearsal to keep that person's name in short-term memory.