When answering this question, you can talk about the types of memories that tend to stay with elderly people. Usually, older people remember significant life events, such as weddings, the birth of children, or important achievements. They also often recall memories from their youth, like childhood experiences, school days, or early friendships, because these moments are emotionally meaningful and happened during formative years. In addition, elderly people may remember stories or traditions passed down in their families. You can mention that emotional or impactful events are usually easier to remember for a long time.