What kind of memory retention relies primarily on the active rehearsal of information?

The correct choice highlights that working memory is fundamentally concerned with the active manipulation and rehearsal of information. Working memory serves as a mental workspace where information is temporarily held and processed. It allows individuals to maintain and work with information, such as remembering a phone number long enough to dial it.

Active rehearsal, which includes repeating information mentally or verbally, plays a crucial role in keeping that information easily accessible for immediate tasks. This is in contrast to other types of memory where the focus is different. Sensory memory registers brief impressions from sensory input and does not involve active processes. Long-term memory involves the storage of information over longer periods, often requiring more extensive encoding and retrieval processes, rather than the immediate retention and manipulation seen in working memory. Implicit memory, on the other hand, refers to information that is stored and retrieved without conscious awareness, such as habits and skills, thus not relying on active rehearsal.

Therefore, it is the nature of working memory that is associated with the active rehearsal of information, making it the correct answer.