Eliza remembers her grandfather telling the story of how he met her grandmother 50 years ago. Eliza’s grandpa has these memories stored in his __________ memory.

A memory of an event from 50 years ago is stored in long-term memory, which retains information over extended periods. Short-term memory lasts only briefly, while implicit memory refers to unconscious skills or learned associations and echoic memory briefly holds sounds. The correct choice is long-term.

AI-written and checked against the verified answer.