Final answer:
Unrehearsed information from memory in box 5 will only last 15 to 30 seconds in short-term memory.
Step-by-step explanation:
If information is unrehearsed from the memory in box 5, it will only last 15 to 30 seconds in short-term memory (STM).
Short-term memory is like the information displayed on your computer screen, such as a document or website. After this time, the information in STM either gets transferred to long-term memory (LTM) or is discarded.